[CentOS] Switch to Nvidia from ATI

Bisbal, Prentice wrote:
> We use NVidia cards to do 3D hardware stereo graphics to view molecules
> in 3D. The 3D perfomance after upgrading to the NVidia-supplied driver
> is mind-blowing. 
>   

You are just trying to get me to download quake for linux!  A pox on 
you, I say!  ;-)