i've done it :D
 

i got my custom computer working! i cant wait to try doom 3 now :)

some specs:
3.8 GHz P4 Duo 2x2mb cache
1066Mhz front sidebus
2GB ram 533mhz DDR2
Nividia PCI-E 7950 1GB Graphics card :D
1000 Watt power supply
SATA 500Gb
Thermaltake case
6 fans (liquid cooling coming soon :D)
2 3 coloured neons

forget doom 3... get battlefield 2142 and come play with me.

i might just do that :D

I'd love to have a gaming computer like that.