I installed my new Radeon 9800 Pro card today, and took away my old one (GeForce 5500 FX) and uninstalled all nVidia drivers, first with add/remove and then with Nasty File Remover (v0.71). Restarted machine and installed newest Omega drivers, so I thought i'd be ready to play.. But how wrong was I.. After playing GTA: San Andreas for two minutes the computer crashed, game freezed completely. And everytime Windows starts, it tries to load NvCpl.dll and says that there is an error, could not find NvCpl.dll file.. And when I try to remove nv4_disp.dll, it keeps coming back again and again.. Can't seem to remove it for good. What can I do? Re-install Windows or what..? My power supply is only 250W, but I don't think that it's causing all the trouble..?