Case: Super Lanboy - Already Own
PSU - OCZ Modstream 450 (should be strong enough, since no big PCI-E card, yeah?) - Already Own
CPU: AMD Athlon 64 X2 4400+ - $460
MB: Asus A8N-SLI - $107
RAM: Corsair XMS 2x1GB - $189 total
Video Card: $62 on newegg, some cheap PCI-e card
HDs: Raptor...