With the official release of the GeForce 9800 GX2 yesterday, nVIDIA has released the Forceware 174.53 set. Although these drivers initially supported the GeForce 9800 GX2 and the upcoming GeForce 9800 GTX, they have been modded by several different people/sites to allow them to be used on other GeForce 6, 7, 8, 9 video cards.
1.) Unininstall the NVIDIA drivers from "Program Add/Remove" 2.) Install and Run Driver Sweeper with "NVIDIA Display" selected. (It's recommended to do this, so that left over data from old graphics drivers don't conflict with the new ones.) 3.) Restart the computer. 4.) Install the new Forceware drivers.