I have a pretty decent rig I am selling atm.
Black Midtower Case tooless front filter, 120mm fans, side mounted hard drives all rails.
550watt Power Supply with 120mm blue led fan
Intel Mainboard supports 1330FSB
Intel E5200 Dual core cpu 2.50Ghz
4GB DDR2 RAM
2 - 250GB HDDs
1 - Blueray combo drive (DVD-RW + Blue-ray read and light scribe labeling)
Mainboard has all the normal options 10/100/1000 ethernet 7.1 HD audio etc
Geforce 9600GT 512MB (Also have the 8800GT that was the last card in the system)
Vista home Premium 64Bit
Office 2007 Pro (Ent version installed)
GateWay 22" HD monitor (1680x1050 glossy screen DVI, VGA, DHMI)
Standard Microsoft Keyboard and laser mouse
All are black and Black and silver.
Its very decent, plays all my games very well COD4, WOW, Left 4 Dead, Oblivion, World in Conflict etc without issues.
Its a very decent machine. (I also have some spare parts) Second mainboard (same model, Intel E2160 1.8Ghz Dual core) Ram, Creative labs Audio card. This stuff was in the machine then I updated some of the stuff, and never re-used the leftovers.
I have decent e-bay rep under same name, some heat again same name as here. Traded here as well.