Hi all! Happy Turkey Day! So I'm running OS X 10.4 and was wondering if I upgrade to Leopard, could I install my old version (Tiger) on another computer (i.e. my parents) w/o any legal problems? Is there an upgrade version of Leopard and a full version? Would I have to have the full version to give Tiger to my parents or is it even a big deal. My mindset is I paid so many thousands of dollars for the hardware, If I buy one software disc, it's going on all my macs. Thanks for the your help!