Hey everybody. I just signed for a package that came for my parents and i entered the serial number. it is a new mac book. I was wondering if you guys could explain to me some of the major differences between Windows and OSX Leapord? I opened the box and was playing arround with it when my parents were gone. Thank god for heat guns, i never found a good use for mine before i had to re-shrinkwrap the mac. So any tips or tutorials would help. Thanks.