If you are one of the three people in the universe lucky enough to own a GeForce 7900 GTX, you'll want the latest version of nVidia's drivers which were just released. The Beta version of ForceWare 84.20 is available, and, among other things, it adds support for the 7900 and 7600 cards. VSync support for D3D and SLI was also added, which lots of people were asking for and can improve visual quality in games. Also, for those who go after deals or mix and match, multi vendor support was improved for SLI, though keep in mind that it's never guaranteed to work with different vendor cards. You can download them here
or you can read the release notes
in PDF format. As with all Beta packages, use these with caution and only if you know what you are doing.