NVIDIA has released ForceWare 163.75 official WHQL certified drivers for Windows Vista.

Release Highlights:

-WHQL certified driver for GeForce 6, 7, and 8 series GPUs.
-Added support for the following Motherboard GPUs:
-GeForce 7150 / NVIDIA nForce 630i
-GeForce 7100 / NVIDIA nForce 630i
-GeForce 7100 / NVIDIA nForce 620i
-GeForce 7050 / NVIDIA nForce 630i
-GeForce 7050 / NVIDIA nForce 610i
-Improved compatibility and performance for NVIDIA SLI technology on DirectX 9, DirectX 10, and OpenGL applications.
-Game and application compatibility fixes. Please read the release notes for more information on product support, features, driver fixes and known compatibility issues.
-Users without English US operating systems are recommended to download International Drivers by selecting the appropriate language.

Release notes (.pdf format)

Vista 32-bit | Vista 64-bit

NVIDIA homepage