Well this would be an almost complete build of it
XION Black XION II XON-103 SECC Steel ATX Mid Tower Computer Case 450W Power Supply - Retail - $64.99
EPoX EP-9NPA+Ultra Socket 939 NVIDIA nForce4 Ultra ATX AMD Motherboard - Retail - $105.00
XFX PVT42GUAD7 Geforce 6800GS 256MB GDDR3 PCI Express x16 Video Card - Retail - $199.00
CORSAIR ValueSelect 1GB (2 x 512MB) 184-Pin DDR SDRAM DDR 400 (PC 3200) Unbuffered Dual Channel Kit System Memory Model VS1GBKIT400 - Retail - $81.00
AMD Opteron 165 Dual-Core 1.8GHz 1MB (per core) 64/32-Bit (939) (OEM) - $330
Western Digital Caviar SE WD800JD 80GB 7200 RPM Serial ATA150 Hard Drive - OEM - $65.00
Total(before tax): $830.98
Does this seem like a solid build?