Hey Mw86; I first started thinking about making one in distilled water because in physics we were discussing how electricity doesn't arc due to no minerals in the distilled/de-ionized water. Well as I'm sure you have heard: "Nothing is new under the sun" ~ Unkown ANyways, I started looking up stuff on the internet and found out people had used vegetable oil (Oil is non-conductive); then I found out about mineral oil; puget systems, based out of Seattle, WA made the concept pretty famous: Mineral Oil Submerged Computer; Our Most Popular Custom PC I still want to take it a step further, an extreme gaming computer is what I have in mind. What's funny is, it seems to me thus far that it's better for a computer to be encased in a liquid oil shell. Instead of relying on the north/south bridges or other heat sinks; heat is transferred directly from the circuits; it's a way to cool everything as long as you have your oil being cooled.