My son recently got a new XBox 360. Now, he's "dying" for a second controller. Well, I would rather avoid paying $50 for another 360 controller when he has 5 original XBox controllers. Now, I know that both generations of controllers are USB. The original controllers use a differently-shaped plug, but it is still USB. So, I need to find an adapter to use the original XBox controller with the XBox 360. Or, I need a little assistance in converting one myself. Thanks!