Boomslang I'd be keen to hear about that.
Redketchup - if the function isn't there it isn't there. I have a third-party usb board for PS3 with a PS button, and while the button works in-game, it won't start the system. I'm not sure what's missing, but I doubt it would be an easy fix. If I had to fix it, I'd chop up a PS3 controller and put bits of it inside the wheel, assuming there's room.