[pci_e3x]

This driver is for GeForce 6 and higher desktop cards. It improves performance for the GeForce 400 and 500 series in several games, adds Ambient Occlusion support for StarCraft 2, has a range of 3D Vision, Surround and SLI improvements, and contains bug fixes. The driver package also contains the 9.10.0514 PhysX drivers.v

http://www.nvidia.com/object/win7-winvista-32bit-266.35-beta-driver.html

http://www.nvidia.com/object/win7-winvista-64bit-266.35-beta-driver.html