Can’t find the reply in the email so I’m posting here instead.
The exact model of your device 
Color of your device. 
Capacity of the device. 
Part number of the device (Take note of all the number on the device). 
Date of purchase. (MM/DD/YYYY) 
Where are you located? (Country, City, Physical Address and ZIP code) 
 
Cruzer USB2.0 Flash Drive
Black, with white sliding tab
4GB
SDCZ36-004G BH1007VPKB
06 OCT 2010
Singapore. 260001
Windows 7 Ultimate 32-bit
AMD Athlon 7750 Dual-Core
2GB RAM
Yes I’ve tried installing Cruzerlock using a laptop running Windows Vista
Downloaded the file from http://www.sandisk.co.uk/Retail/Default.aspx?CatID=1274 
No I’ve never used/installed U3.
Case ID number for this incident is: 501610
1: Cruzer is detected and funtional
2: Cruzer is not in the drop downlist
My specs
 
Yes its a goddamn Cruzer
 
 
             
            
              
            
           
          
            
              
                ed_p  
              
                  
                    October 7, 2010,  4:39am
                   
                  2 
               
             
            
              Jamesyclone: “Windows 7 Ultimate 32-bit”
" I’ve tried installing Cruzerlock using a laptop running Windows Vista"
CruzerLock™ 2: "
Supported Operating Systems 
Microsoft Windows 98se 
Microsoft Windows ME 
Microsoft Windows 2000 
Microsoft Windows XP Home 
Microsoft Windows XP Pro " 
 
             
            
              
            
           
          
            
            
              Come now… XP is what, 10 years old? Would it be too much to expect a piece of software that is compatible with the current trend? =\
             
            
              
            
           
          
            
              
                ed_p  
              
                  
                    October 7, 2010,  1:23pm
                   
                  4 
               
             
            
              Encryptx: " Attention San Disk Customers: 
http://www.encryptx.com/eCommerce/productinfo.php?lic=RMA8QPLAQ73XGR3S4AGAPUK94C )"=&rstn=sand001
             
            
              
            
           
          
            
            
              sandisk is no longer affiliated with encryptex so you would need to purchase the software from them.