You can get them at nZone.
Supports GeForce FX, 6, 7, and 8 series GPUs. Improved compatibility and performance for NVIDIA SLI technology on Microsoft DirectX 9.0c and OpenGL 2.1 applications. Improved compatibility for The Way It’s Meant To Be Played game titles: BioShock, Crysis, Enemy Territory: Quake Wars, Hellgate: London, and World in Conflict. Added PureVideo HD decode acceleration for GeForce 8600, 8500 and 8400 series GPUs. Numerous game and application compatibility fixes. Please read the release notes for more information on product support, features, driver fixes and known compatibility issues.