Hey guys... I just picked up a copy of SL and have decided after I just got my computer back from repairs that I should probably have a backup of some sort. My question is since I'm itching to get SL on my machine; can I upgrade to SL now and then get an external and make a clone of my newly installed SL machine and boot off of it on a machine with like 10.5.8 on it? Just in case my computer needs to go into the shop again...