quake 3 wont run

after i double click on the quake 3 arena icon, the console comes up and starts running, then as normal, the screen flickers, but the game freezes on a gray screen, and the mouse wont move...It ran just fine before i reinstalled it! im running a PIII katmai @ 600mhz, 25gb hdd, 128mb ram, TNT2 w/ 32mb, mobo is Intel 815i
anyhelp would be appreciated.... thanks!!

Have you installed any other games since?
Do other opengl games currently work?
I have experienced the same problem
and my fix was to delete a few lines
in system.ini placed there by some directx
games that i have installed.