Is there a way to download and use Mac based programs on a PC? I don't know if it makes any difference or not, but I have an 80GB HD that is part of my system and not being used. While I'm here, I seem to have two OS on my computer. When rebooting it want to use an OS that I think is not complete (it will ask that a disc be installed). I have to watch and change to another OS when booting up. Can I just, somehow, do away with one OS? Thanks in advance for the help.