I purchased a retail copy of Vista for my PC and was able to install this on a second computer by calling Microcrap and activating over the phone. I simply told them that my HD crashed and I needed to reinstall... VOILA Vista on 2 computers. I dont really need to hear anything about piracy or dishonesty either. I feel that if I payed for a copy of software, I should be able to use this on anything that I will use. I dont sell it or share it so please... My main question is will a senario like this be possible with Leopard? Please just let me know if I can install it on my MBP and my familes iMac... thanks in advance.