Just joined here. here's the system and yes it will be playing doom 3.
-Gigabyte 8KNXP Ultra MB (Intel 875 chipset)
-2 18gb Ultra 320 Scsi hard drives in raid 0
-Creative Labs Sound Blaster Audigy 2 ZS
-EVGA Geforce FX 5950 256mb vid card
-Hauppauge WinTV 350 PVR Tv tuner
-Intel 3.2 ghz...