vexing XP/Q3 problem

I switched over to XP pro from win9X (finally quit playing the last game that wouldn't play under the NT's) and I can't get Quake3 to look right. I have a general lack of contrast (everything looks murky, like there is fog everywhere), and the large text looks fuzzy. The small text in the console is sharp, but the display of the scores shows marked aliasing that wasn't there under Win9X.

I am playing he exact same copy of Q3, all options intact, and using the 29.42 XP detonator, as I was under W9X. It looks like something in the opengl options must be responsible, but I never changed anything there under 9x. Any help would be appreciated, the game looks even worse than normal now.

re install the latest drivers for xp, del the q3config.cfg file, and disable any aa options.