I am working on a project to convert an old Mac +, into a Linux box, instead of converting it into a fish tank. I've got a small VGA monitor that will fit right in the case, but am looking for a small form factor mother board and power supply. I'd like to have at least a Pentium class processor, but not something that puts off a lot of heat and consumes a lot of power. Board would have to be about 10'x10" or less. Any Ideas?