I was about fed up w/ my geforce2 mx... good framerates at high res, but the image quality blew. Until i applied these tweaks and they make all the difference in the world. I am getting the same FPS as I was in 1280*720*16 now at 1152*864*16...The game looks twenty times better. Here ya go:
/r_lodBias -2
/r_subdivisions 1
/r_lodCurveError 10000
/r_stencilbits 8
/r_ext_compress_textures 0
/vid_restart

disabling texture compression didn't have nearly the negative performance effect I thought it would and the game just looks that much better.
-ram