I've just ordered a second Xbox to chip but I have decided to chip my original box instead as I fear melting the motherboard etc. What would be involved in playing live games on my new xbox or would it be a good idea to swap the original HDD from the old one as the chipped one is getting a new 120gb drive. Will the new xbox take my old hard drive and just work? Or, do I just set my profile up on the new box? I'm not worried about saved games etc.