Nvidia quietly released their ForceWare drivers for Windows Vista about a week ago. Get them here:

Windows Vista (32 bit)

http://www.nvidia.com/object/winvista_x86_100.65.html

Windows Vista (64 bit)

http://www.nvidia.com/object/winvista_x64_100.65.html

Some of the release highlights as mentioned on their site:

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