Guru3D - Driver Sweeper is a fast tool to remove driver leftovers from your system. It's very important to remove your drivers on a proper way, because driver leftovers can cause problems like stability and startup problems. You can use it if you want to update/remove drivers from your system.
What can it be used for ?
The current supported drivers are NVIDIA (Display and Chipset), ATI (Display), Creative (Sound) Realtek (Sound), Ageia (PhysX) and Microsoft (Mouse).

http://www.guru3d.com/category/driversweeper/
I used it to clean my ATI vid drivers out and it works like a champ.