Hi, I had the same problem, I'm no expert but figured there are plenty of them on line *laff* anyhow this driver worked for me. Driver Version # 6.14.10.4342 Now don't worry that it's an XP driver. Its the latest XP driver and it WORKS with Vista on this Dell system. Before running the driver you MUST....Right click your icon go to the "Compatibility tab" check boxes "Run this program in compatibility mode for:" and at the bottom check "Run this program as an administrator" (this is good to remember for running any XP programs in "Vista") after this; open & run your Driver as normal.
Driver link: http://www.driverzone.com/device.php?id=23640
Good reading link (this helped me): http://richardrudek.spaces.live.com/blog/cns!8B65F3DE0BE797AA!115.entry
I had a lot of trouble loacting the driver but once i searched just the numbers ie: 6.14.10.4342 it was a lot easier to find.
Hope this sames someone some time and heartache...happy computing :-)
Cheers
Bruce