Okay, guys where are those worn out old pcs just lying around. Look for anybody with some old cases with power supplies that work. Dads, school buddies, everyone knows somebody that these old worthless units sitting around collecting dust etc.
I buy these by the dozen, just because it is cheaper on shipping and run several off a single power supply from an old computer. Adaptors are available at circuit city, best buy, maybe other places to use existing connectors or cut and splice.
I haven't had any "blow-up" yet, but you never know.
Good luck, and be careful.