NVIDIA has released ForceWare 100.65 drivers for use with Windows Vista.

Release Highlights:

-WHQL Certified driver for GeForce 8800, GeForce 7 series, and GeForce 6 series GPUs
-Beta driver for NVIDIA SLI support for GeForce 8800 GTX/GTS GPUs
-This driver supports the following features:
-Single GPU support
-DirectX 9 support for GeForce 6/7/8 series GPUs
-DirectX 10 support for GeForce 8800 GPUs
-OpenGL support for GeForce 6/7/8 series GPUs
-NVIDIA SLI support
-DirectX 9 support for GeForce 8800 GPUs
-OpenGL support for GeForce 8800 GPUs
-DirectX 9 and OpenGL NVIDIA SLI support for GeForce 6 and 7 series GPUs and DirectX 10 NVIDIA SLI support for GeForce 8800 GPUs will be available in a future driver
-Please read the release notes for more information on product support, feature limitations, and known compatibility issues

Release notes (.pdf format)

Vista 32-bit | Vista 64-bit

NVIDIA homepage