Vista - Video Driver Problem

Fresh install of Vista Ultimate, my system is a c2.6G with 512Mb of RAM.
Video card is an ATI All in Wonder 9600 XT. Problem occurs when I try to
view a picture, the system hangs. I am using the default drivers that
Windows detects for my card. I also downloaded the driver for the card from
AMD/ATI, but they seem to imply they are designed for Vista RC2. In any
case, I can't even install them. I get an error message from the driver
setup program saying it can't detect my card.

I'm assuming is a problem with the video driver, but I'm curious if anyone
else if having this problem.

Thanks

Brian