One more thing, Heatware:
http://www.heatware.com/eval.php?id=23827
Another thing, the USB ports on this machine are iffy, I don't think they fully work, and they are USB 1.1 since this PC uses the KX133 chipset. So just be forwarned if you buy this machine, you may need to spend $10-15 on a PCI USB 2.0 card. That's one of the reasons the price is low.
Other then that, all it needs is a case which will be ordered upon someone purchasing it. If you decide to purchase it and it's DOA, I will refund your money but you will have to pay for shipping back to me. No real warranty other then that since it is used.
Here's the case I will be ordering:
http://store.yahoo.com/amamax/pomaatsimico2.html
Edit - looks like the USB ports work, at least one of them....wierd, maybe you won't have to buy a card after all.