| 
                 
                    Closing price on 3/18/2008
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    17.00 | 
                 
                
                    | High | 
                    17.00 | 
                 
                
                    | Low | 
                    15.50 | 
                     
                
                    | Volume | 
                    27,400 | 
                                 
                
                    | Split-adjusted Price | 
                    15.50 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DCS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                3/18/2008
             | 
            
                -1.60 / -9.36%
             |             
            
                17.00
             |           
            
                17.00
             |               
            
                15.50
             |                           
            
                15.50
             | 
            
                15.50
             |                     
            
                15.50
             |                                 
            
                27,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/17/2008
             | 
            
                -1.40 / -7.57%
             |             
            
                17.50
             |           
            
                17.60
             |               
            
                17.10
             |                           
            
                17.10
             | 
            
                17.10
             |                     
            
                17.10
             |                                 
            
                20,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/14/2008
             | 
            
                -0.60 / -3.14%
             |             
            
                19.00
             |           
            
                19.20
             |               
            
                18.10
             |                           
            
                18.50
             | 
            
                18.50
             |                     
            
                18.50
             |                                 
            
                8,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/13/2008
             | 
            
                +0.10 / +0.53%
             |             
            
                18.70
             |           
            
                20.00
             |               
            
                18.70
             |                           
            
                19.10
             | 
            
                19.10
             |                     
            
                19.10
             |                                 
            
                7,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/12/2008
             | 
            
                +0.10 / +0.53%
             |             
            
                18.90
             |           
            
                20.70
             |               
            
                18.90
             |                           
            
                19.00
             | 
            
                19.00
             |                     
            
                19.00
             |                                 
            
                19,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/11/2008
             | 
            
                -2.10 / -10.00%
             |             
            
                20.00
             |           
            
                20.00
             |               
            
                18.90
             |                           
            
                18.90
             | 
            
                18.90
             |                     
            
                18.90
             |                                 
            
                10,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/10/2008
             | 
            
                +1.10 / +5.53%
             |             
            
                21.80
             |           
            
                21.80
             |               
            
                18.00
             |                           
            
                21.00
             | 
            
                21.00
             |                     
            
                21.00
             |                                 
            
                42,300
             |            
            
                 
             |                                       
         
    
        
            | 
                3/7/2008
             | 
            
                +1.80 / +9.94%
             |             
            
                19.90
             |           
            
                19.90
             |               
            
                19.90
             |                           
            
                19.90
             | 
            
                19.90
             |                     
            
                19.90
             |                                 
            
                3,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/6/2008
             | 
            
                +0.10 / +0.56%
             |             
            
                18.10
             |           
            
                18.10
             |               
            
                18.10
             |                           
            
                18.10
             | 
            
                18.10
             |                     
            
                18.10
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/5/2008
             | 
            
                0.00 / 0.00%
             |             
            
                16.30
             |           
            
                18.00
             |               
            
                16.30
             |                           
            
                18.00
             | 
            
                18.00
             |                     
            
                18.00
             |                                 
            
                19,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/4/2008
             | 
            
                -1.70 / -8.63%
             |             
            
                19.00
             |           
            
                19.00
             |               
            
                18.00
             |                           
            
                18.00
             | 
            
                18.00
             |                     
            
                18.00
             |                                 
            
                4,900
             |            
            
                 
             |                                       
         
    
        
            | 
                3/3/2008
             | 
            
                -2.30 / -10.45%
             |             
            
                21.80
             |           
            
                21.80
             |               
            
                19.70
             |                           
            
                19.70
             | 
            
                19.70
             |                     
            
                19.70
             |                                 
            
                24,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/29/2008
             | 
            
                -1.60 / -6.78%
             |             
            
                21.50
             |           
            
                22.50
             |               
            
                20.50
             |                           
            
                22.00
             | 
            
                22.00
             |                     
            
                22.00
             |                                 
            
                2,400
             |            
            
                 
             |                                       
         
    
        
            | 
                2/28/2008
             | 
            
                +0.50 / +2.16%
             |             
            
                24.90
             |           
            
                24.90
             |               
            
                22.10
             |                           
            
                23.60
             | 
            
                23.60
             |                     
            
                23.60
             |                                 
            
                3,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/27/2008
             | 
            
                -2.10 / -8.33%
             |             
            
                27.00
             |           
            
                27.00
             |               
            
                23.10
             |                           
            
                23.10
             | 
            
                23.10
             |                     
            
                23.10
             |                                 
            
                13,900
             |            
            
                 
             |                                       
         
    
        
            | 
                2/26/2008
             | 
            
                -2.90 / -10.32%
             |             
            
                29.00
             |           
            
                29.00
             |               
            
                25.20
             |                           
            
                25.20
             | 
            
                25.20
             |                     
            
                25.20
             |                                 
            
                10,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/25/2008
             | 
            
                -0.70 / -2.43%
             |             
            
                26.00
             |           
            
                29.20
             |               
            
                25.00
             |                           
            
                28.10
             | 
            
                28.10
             |                     
            
                28.10
             |                                 
            
                35,300
             |            
            
                 
             |                                       
         
    
        
            | 
                2/22/2008
             | 
            
                0.00 / 0.00%
             |             
            
                26.00
             |           
            
                28.80
             |               
            
                26.00
             |                           
            
                28.80
             | 
            
                28.80
             |                     
            
                28.80
             |                                 
            
                10,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/21/2008
             | 
            
                -2.20 / -7.10%
             |             
            
                29.00
             |           
            
                29.00
             |               
            
                28.80
             |                           
            
                28.80
             | 
            
                28.80
             |                     
            
                28.80
             |                                 
            
                8,700
             |            
            
                 
             |                                       
         
    
        
            | 
                2/20/2008
             | 
            
                -3.00 / -8.82%
             |             
            
                33.00
             |           
            
                33.00
             |               
            
                31.00
             |                           
            
                31.00
             | 
            
                31.00
             |                     
            
                31.00
             |                                 
            
                12,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/19/2008
             | 
            
                0.00 / 0.00%
             |             
            
                34.00
             |           
            
                35.50
             |               
            
                34.00
             |                           
            
                34.00
             | 
            
                34.00
             |                     
            
                34.00
             |                                 
            
                9,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/18/2008
             | 
            
                -2.30 / -6.34%
             |             
            
                33.50
             |           
            
                34.20
             |               
            
                33.20
             |                           
            
                34.00
             | 
            
                34.00
             |                     
            
                34.00
             |                                 
            
                24,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/15/2008
             | 
            
                -0.70 / -1.89%
             |             
            
                37.00
             |           
            
                38.40
             |               
            
                36.10
             |                           
            
                36.30
             | 
            
                36.30
             |                     
            
                36.30
             |                                 
            
                4,500
             |            
            
                 
             |                                       
         
    
        
            | 
                2/14/2008
             | 
            
                -1.00 / -2.63%
             |             
            
                39.00
             |           
            
                39.00
             |               
            
                36.50
             |                           
            
                37.00
             | 
            
                37.00
             |                     
            
                37.00
             |                                 
            
                13,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/13/2008
             | 
            
                -1.00 / -2.56%
             |             
            
                42.00
             |           
            
                42.00
             |               
            
                38.00
             |                           
            
                38.00
             | 
            
                38.00
             |                     
            
                38.00
             |                                 
            
                6,200
             |            
            
                 
             |                                       
         
    
        
            | 
                2/12/2008
             | 
            
                -1.00 / -2.50%
             |             
            
                39.00
             |           
            
                39.00
             |               
            
                39.00
             |                           
            
                39.00
             | 
            
                39.00
             |                     
            
                39.00
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/1/2008
             | 
            
                0.00 / 0.00%
             |             
            
                40.20
             |           
            
                40.20
             |               
            
                38.50
             |                           
            
                40.00
             | 
            
                40.00
             |                     
            
                40.00
             |                                 
            
                24,800
             |            
            
                 
             |                                       
         
    
        
            | 
                1/31/2008
             | 
            
                -2.50 / -5.88%
             |             
            
                45.50
             |           
            
                45.50
             |               
            
                39.00
             |                           
            
                40.00
             | 
            
                40.00
             |                     
            
                40.00
             |                                 
            
                21,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/30/2008
             | 
            
                +3.50 / +8.97%
             |             
            
                40.20
             |           
            
                42.50
             |               
            
                40.00
             |                           
            
                42.50
             | 
            
                42.50
             |                     
            
                42.50
             |                                 
            
                51,900
             |            
            
                 
             |                                       
         
    
        
            | 
                1/29/2008
             | 
            
                +1.00 / +2.63%
             |             
            
                38.00
             |           
            
                39.00
             |               
            
                38.00
             |                           
            
                39.00
             | 
            
                39.00
             |                     
            
                39.00
             |                                 
            
                12,900
             |  
            
                 
             |                                                              
             
    
         
    
    
 |