I have sold my PowerBook so I have no use for the enclosure (Bytecc ME-320):
http://secure.ncix.com/products/index.php?sku=11773
This is Firewire only, no USB. I'll take ATA-100 hard drives or DVD burners. It has the Oxford 911 Firewire chip so it'll work fine with any Mac. I'll include the power cord and a Firewire cable with it. Want $30.
Tentatively sold to a friend.