I'm basically parting out this PC: Newegg link
Lenovo micro ATX motherboard with an Intel Core 2 Quad Q8200 (2.33 GHz) and 16 GB RAM (I replaced the OE RAM and added more)
NVIDIA GeForce 9300 GE graphics card
300 (?) W power supply
I also have a flat LCD monitor, a wired keyboard, and a bunch of other janky stuff if you're interested.
Basically you would need a case, a HDD, and an OS to have a fully functioning decent PC.
I have literally no idea what this stuff is worth. It was a fully functional PC 24 hours ago. Make me an offer?