Well i built this rig in 2007 and it's changed alot since then, so i'll put my current spec then a list of the old parts;
CPU: Intel Core 2 Quad Q6600 overclocked to 3GHz sometimes 4GHz (standard clock 2.4GHz)
MB: Gigabyte GM31-ES2L
RAM: OCZ 2GB*2 DDR2 @ 800MHz
GPU: KFA2 NVIDIA Geforce GTX 460 768MB overclocked to core 800, shader 1600, mem 1900
Optical Drive: Sony DVD/CD Rewriter
HDD 1 (OS): Western Digital 500GB SATAII
HDD 2 (Bckup): Samsung F2 1TB SATAII (Encrypted with a 50-60 char password on 256bit AES)
PCI 1: USB Expansion Card
PSU: Coolermaster 1000 watt (1200 peak) Silent Pro
Monitor: Samsung SyncMaster 2233RZ 3D HD Monitor
Cooling: 5 * ThermalTake Fans (70-85CFM), OCZ HydroFlow MK1 CPU Waterblock, XSPC single bay reservoir and pump, XSPC 120mm Radiator
OLD PARTS: 2.6GHz Intel Core 2 Duo, 2GB RAM, NVIDIA Geforce 8800GT, NVIDIA Geforce 9500GT 1GB (i blew it up), NVIDIA Geforce GT 260, Coolermaster Sphere Heatsink (one of the most awesome looking heatsinks i've seen, AKASA Evo 120 Heatsink v2, Hanns G New York Style 1440*900 monitor (used now for dual screening), 450watt PSU, 750watt PSU.
I think thats about it, this things getting retired soon anyway.
*EDIT* i should probably state i run win7 Pro x64 used to run a dual boot of XP Pro x64 and Win7 Beta x64, and also my case is a coolermaster elite 430.