The idea is not new, and i was inspired by the guys at http://www.pugetsystems.com/submerged.php and their oil cooled pc. A big problem i saw with a lot of fish tank oil pcs, was the nightmare of trying to do anything on them once the oil was in. So i went with the idea of having the "Computer" parts all mounted in one piece that gets sunk into the oil. Storage is also an issue. As its a HTPC, i wanted big storage, but didnt want a big external drive lumbering around the tank. I solved this issue by running the OS on a laptop drive in the top under the tank cover, and using the vista iSCSI initiator to hit my NAS in the office downstairs. So i have lots of storage and no messy external drives. Best thing is that with the bubbles turned off, its totaly silent. :P This machine runs my 42" plasma and the odd game or two.... old parts and not going to tear crysis a new one, but does its job perfectly.