Check this: (Source from another page)
Step 1 - Download the latest Drivers from the nVidia website
Step 2 - Download WinRAR
Step 3 - Open the Driver file with WinRAR and extract the nView.CAB file (onto your desktop for now)
Step 4 - Open the nView.cab file with WinRAR and extract all the files into a folder on your desktop
Setp 5 - Run the nviewsetup.exe file as normal.
Setp 6 - Go to Control Panel, NVIDIA nView Desktop Manager will be there now. Double click it
Setp 7 - Enable nView Desktop Manager. There you go now!