CPU:

RAM: 2x OCZ Gold XTC PC2-6400 2GB 2X1GB DDR2-800 CL5-5-5-12 240PIN -- $214.84
CPU: Intel Core 2 Quad Q6600 Quad Core Processor LGA775 Kentsfield 2.40GHZ 1066FSB 8MB Retail Box -- $328.44
Motherboard: ASUS P5K ATX LGA775 -- $156.40

Other:
Hard drive: 2x Seagate Barracuda 7200.10 500GB SATA2 3GB/S 7200RPM 16MB Cache NCQ -- $307.96
Headset: Sennheiser PC151 Gaming Stereo Headset -- $69.99
Video card: EVGA E-GEFORCE 8800GTS 500MHZ 640MB 1.6GHZ GDDR3 Dual DVI-I HDTV Out -- $398.88

Total: $1476.51