wait, do you mean a key switch like as in a car ignition? oh man, do i feel dumb. i just figured you had a special name for one of those toggle switches that we all equate to missile fire buttons, with the little red guard on them. it looks like the happs switch has a spring on it, so it would be just like a momentary switch. you just turn it and then let go, like in a car. ponyboy could probably get you a better price for that, but you'd be paying 60 bucks for the look. but just to sumarize, if you hook everything up with a bits limited power strip and then use that as your computer start switch, everything would work like you want it to. just don't hold the switch down too long.