Just as soon as Microsoft makes the next beta of Vista available, both ATI and nVidia release updated driver packages for the new OS. One of the biggest gripes for the Vista betas has been the lack of driver support, but thankfully the two biggest players in the video card market have been keeping well on track. You can find nVidia's drivers
and ATI's drivers
on both their respective sites, along with complete changelogs. Most noteably, many of ATI's notorious issues with multiple displays on Vista have been addressed, and proper functionality with the X1300 and X1600 series cards is now included. nVidia's fixes were primarily related to games, though there are some minor application fixes as well.