Good lordy you windows folks do too much work.
since my mac plus in 87, i've had how many viruses?
how much spy ware?
how many viruses out there for os X?
I don't worry about going online, wondering what i've accidentally downloaded to my system
of course, if someone did manage to try it on my machine, any program that attempts to open itself for the first time requires an admin name and password... so that'* not a problem...
but, since people seem to think you can't do anything on a mac, blah blah blah, the first step you NEED to take is dump IE... get a real browser, that sticks to the standards. IE is about the biggest security flaw there is for windows users right now. try out something like firefox or camino. or mozilla. or netscape.
really, anything but IE will help you out a lot...