Clay,

The reason for the "immunity" of a Mac to viruses is that when these nuts who write the viruses do so, they want to infect the greatest numbers of computers; PC's. They write them to hurt PC's and use PC programming to do so. Mac's run differently, use different programming, etc. I don't presume to be "immune" just because I use a Mac. It's just that my exposure to them is dramatically lower than someone who uses a PC. Also, I know a lot of Mac users who have never had an issue with viruses in spite of running no anti-virus software. Best Regards....