i built my supergun inside of a small plastic radio shack project box, and screwed down that and the power supply to a piece of plywood. i butted them together so that the wires from the power supply go straight into the box that houses the control ports, the service button, the video converter board, and the jamma connector poking out of the side of the box. the plywood also serves as a base for any jamma board that plugs into the box. the way i built this, it doesnt need fans or ventilation.