I got it for my desktop, not mobile. Check this out, it may help. lol

 

http://www.dellcommunity.com/supportforums/board/message?board.id=vista&thread.id=26130

Use this program to make the new ATI drivers install on a dell laptop.

 

http://www.driverheaven.net/modtool/

 

 

this is not supported by dell. Use at own risk. i used it and i am currently running the 7.4 cat drivers in vista on my E1705.