I have the following rig for sale, no issues with it, it's been great while I've had it. Most of the components are only around 9 months old.
Silverstone LC16M Case - Black with VHD and Card Readers
Intel Core 2 Duo E5400 2.2Gz CPU
CORRECTION: ASUS PK5c Motherboard (not A5Ne - this was my last mboard - oops)
2GB RAM
Cooler Master Real Power Pro Modular PSU, 520W ATX
1x 80GB system drive
1x 500GB recording drive
1x Hauppauge PVR150 analogue tuner
1x Hauppauge HVR3000 analogue/digital tuner
1x NVIDIA GeForce 8600GT graphics card - passive cooling
Microsoft Remote Control + Infrared Receiver + IR Blaster
1x DVI to HDMI video cable
It's running Windows 7 at the moment, but I can supply it with Vista Ultimate if required.
Offers via PM please :)
Pics on request
EDIT: forgot to mention there is also a Media Center Wireless Keyboard with Mouse (all-in-one design)
It's on Trade Me at the moment: http://www.trademe.co.nz/Browse/Listing.aspx?id=212715096
Asking $1500neg