These are lightly used swap-out parts from my current machine:
$25 - Centon 2GB Memory Kit, (2x1GB) DDR2-800, 5-5-5-18 timings
$25 - G.Skill 2GB Memory Kit, (2x1GB) DDR2-800 w/ heat spreader, 5-5-5-15 timings
$45 - XFX GeForce 8600GT 512MB DDR2, PCIE x16 2.0
$30 - ZeroTherm BTF-90 CPU Cooler w/ 92mm fan, Intel 775 & AMD Brackets
I also have an old (circa 2005) built machine that I use for testing, playing around with Win7 and Linux, etc.. would like to sell it all together but I'll consider selling parts. So make me an offer! Specs are:
MSI K4AV-L ATX Motherboard (Via chipset, old AMD Athlon XP socket)
AMD Athlon XP 2200+ 1.8gHz CPU w/ stock heatsink/fan
1.75GB DDR-400 Memory
40GB HDD (circa Y2K, pulled it out of an old HP Pavilion)
Sapphire Radeon 9250
Lite-ON DVD-ROM (white cover panel)
Motorola 802.11a/b/g WiFi PCI Card (antenna comes loose)
56K PCI Fax/Modem (OLD SKOOOOOOL!)
CD-ROM (circa 2000, not sure of make, gray cover panel)
CoolerMaster ATX Mid-tower case (very basic, black finish, no window)
I have/will make driver CDs for everything, and I'm pretty sure I have printed manuals for most of the older parts too. I have a box of misc cables as well in case you need that kinda stuff. Shipping costs are negotiable, except if you get the whole old computer it's just too big.