Nvidia has released the ForceWare 81.98 WHQL drivers, which mainly add support for the new Nvidia Geforce 7800 GS AGP cards. Release Highlights:

WHQL Certified
Adds support for GeForce 7800 GS AGP
Application compatibility fixes.
Mixed vendor support for NVIDIA SLI.
TV-Out/HD-out support for NVIDIA SLI.
Added support for VSync on Direct3D games when running NVIDIA SLI.
Performance enhancements for dual-core CPUs.
PureVideo high definition MPEG-2 de-interlacing support.
Usability enhancements when connecting to an HDTV.
Microsoft DirectX 9.0c and OpenGL 2.0 support

The complete release notes can be downloaded here.

Download the new drivers at http://www.nvidia.com/object/winxp_2k_81.98.html