CPU: AMD Athlon 2600+ (Barton) OC @ 2.22 GHz (stock 1.9)
Heatsink/Fan: Thermalright AX-7 w/ variable speed 80mm fan
MotherBoard: Asus A7N8X-X
Memory: 768MB PC2700
Hard Drive: Western Digital 80G, 8M cache
Graphics: BFG 6800GS OC @ 405 core/55 mem (1120 ddr), one extra vertex processor unlocked
DVD+RW: Toshiba
CD-ROM: Creative 48x
Floppy: Sony
Sound: Creative Sounblaster Live
Speakers: Logitech X-530 5.1
Monitor: CTX 17" CRT
Case: Chieftec mid tower (Antec ODM)
Keyboard: Keytronic Lifetime
Mouse: Logitech Mouseman Dual Optical
Light: Blue cold cathode, sound activated
3DMark05 - 3DM 4921 / CPU 3284
3DMark06 - 3DM 2272 / SM2 964 / HDR,SM3 907 / CPU 782
I think I upgraded the power supply in my case but i don't remember the brand and i'm not home.
It's not cutting edge, but it gets me 80+ avg FPS in FEAR.

I tend to upgrade as I go, instead of buying a whole new machine.