So, how far have you gotten?
…that is, if your video card can handle it 
Gone for me are the days of playing all my games in 1600 by 1200----better go buy a 6800…
I’m currently at Statis Transfer Control, my mission is to find the portal. I think I’m in Delta Labs 2, but not sure on that.
My Gefore 4 ti4600 seems to be holding up well. I decided to run the game in 1024 x 768 in low quality, I get the best results like that. It kind of hiccups when you walk into a new level. So far I haven’t seen too much jitter when there are many monsters on the screen at once.
Doom3 ate my video card 
I’m not having very good luck. My Radeon 9700 pro burnt out some time ago (heatsink FELL OFF) so I was using my Geforce2 GTS to play Doom3… which wasn’t too horrible on the lowest possible settings. Then, partway through a level, it froze. I rebooted, heard the POST codes meaning ‘no videocard’… look inside, and the GPU fan had stopped and the card fried So unless I can get Doom3 working on my ATI Rage128, I think I’ve gotten about as far as I can for a while. (I was getting bored anyways and using cheat codes 
give all = good!)
I haven’t started yet, I got installed under linux, which is cool, I just need to get linux drivers for my Geforce FX 5500 (256mb)