Hey everyone. I need some help with something. My dad is getting a MacBook Pro, giving me his C2D MacBook, and I am giving my CD MacBook to my brother. I was hoping that I could just switch the hard-drives in the MacBooks and be done with it, but I wasn't sure if there was anything else I had to do. Will there be registration problems or warranty problems? Neither of the MacBooks have the extended AppleCare, so we don't have to worry about that. When I go look at the System Profiler, it shows the serial number for this computer and everything. Will the hard drive/OS be able to know that it is in a different computer and automatically update all of that, or will I have to re-install the OS? Thanks.