riva tnt doesn't like opengl

I installed opengl 100.101 ( the periods are off ). I was trying to get rid of the snowy effect I got when I reinstalled quake 3. I couldn’t make out any of the screens. When I installed and ran open gl I had directx 8 going as well. It came up as 2 tiny little screens. I unistalled open gl but when I reinstalled my drivers for the video card and monitor I can only get super low res ( lower then normal I think ) and black and white. I tried to adjust the settings and it said I have a adapter wrong. What did I do this time?
Mike Jayne