This is the method of installing them:
1: Go to
www.driverheaven.net and download DriverCleaner Pro
2: Go into control panel -> Add/remove programs -> uninstall Nvidia drivers
3: Reboot and enter safe mode
4: In safe mode, run Driver Cleaner Pro, and use it to remove the leftovers of the previous Nvidia drivers
5: Install the new driver
6: Reboot, and you are done!
That ensures a clean installation of the new drivers, and safe removal of the old drivers. It also ensures you don't have conflicts when changing. That's how to get it to work.
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Notebook: Dell XPS M1330 Running Fedora 11 Linux (Leonidas)
Desktop: ASUS Rampage Formula X48
Intel Core 2 Quad Q9450 (Yorkfield) @ 3.51Ghz
4GB DDR2-800 PNY
Albatron 8800GT 512MB
Corsair HX-620 PSU
Running Fedora 11 Linux (Leonidas)
Dual Dell 2407WFP 
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