I'm using the Antec P180 case, some high efficiency 500 Watt psu
Nforce 4 chipset Mobo with onboard 10/100/1000 lan, and 7.1 sound , socket 939 AMD 64 XP3500 (single core as there really are no games out yet that can take advantage of dual core cpus ) an ATI X1800XT 512 megs of ram. The ram speed is a touch slow on it compared to the 256 meg model. i'm able to play GTR2 in 1600X1200 with anti aliasing and stuff, but the replays get a bit choppy. oh yeah i have 2 gigs of ram. I used to have a raid controller card and 2 drives in a Raid 0, Awesome for load times on games and such. but then if the card goes out, a channel on the card, or one of the drives you lose everything. which blows.
Oh btw for the money the 7.1 cheap creative labs speaker set on new egg can't be beat. i got it for $70 and it sounds really good. just don't expect it to go crazy loud. it goes loud enough to upset your neighbors in an apartment so its enough for me.
from a quick google search, it looks like the 8800GS out benchmarks the x1950XT so i'de imagine you could play in 1600X1200 just fine
I've had all NVidia cards, except this last one, and i wish i would have spent the same amount of money on an NVidia card then on an ATI one. Doh!
We should try some online GTR2 action when you get your new box setup.