Why not just install windows and a good virus program. AVG comes to mind...and yes its free and opne of the best out there. As for spyware...just be careful when u browse and u'll be fine. Most mac users are computer savvy in general so just don't click pop-ups or install code u are not familiar with. I have over 200 windows pc's under my control
and I do not get viruses or spyware. Just protect the computer like it should be and u'll be fine.