video card driver necessary?

[yk]

> If you've got video at a decent resolution then you have
> a driver specific to your hardware already.  If you use
> nVidia or ATI graphics then the manufacturer's drivers
> are usually needed for 3D acceleration (including
> desktop effects).  Do you have an ATI card?  What type? 
Mine is ATI Redeon 9550 and it's  getting with the default driver.
None resolution problem ever presented.