Mac crew, hypothetical; say one has a macbook pro who's logic board carps itself. Nothing can be done. It's a goner. However, the hard drive is still good. Say that same person removes the hard drive puts it in a case and buys a new iMac. Say there are some programmes on the macbook pro hard drive that can't be copied across to the new iMac. Would there be a way for that person to boot up his iMac using the macbook pro hard drive connected via firewire as the main hard drive? Effectively rendering the iMac just a display to... well display what's on the computer he really wants to use? Would that be possible?