We just bought a sideboard off eBay to put the tv on so the little one can't reach it so easily. It had some rough holes cut out already for running cables but I have my xbox and boxee in one side and they both get very hot if the Xbox is on. I have got a typhoon case fan laying around so thought of wiring it up to the Xbox USB port. My thinking was it would only come on when the Xbox is on. Is this right? The only other idea I can think is to make a little circuit on veraboard and use a transistor to turn the fan on acting as a switch from the xbox's USB. I think I would have the same problem though or does anyone know if the voltage goes up when you turn the Xbox on?