Doom III Errors

I was wondering if anyone else has had troubles or luck fixing problems running doom 3.

Currently I'm running DirectX 8.1 with up to date OpenGL drivers for an ATI Rage Mobility card..

Doom 3 still fails to load crashing out at about halfway thru initiation with what seems to be an open GL problem..

I've applied the multiple patches to update the loader and .cfg files yet to no avail.

Anyways.. I'll run a few tests and post the results to see if anyone can make heads or tails of it.. or if anyone is having similiar problems.