Hi, I am currently using a 12 month old whit MacBook, Mac OS has offered the best computing experience I've had in 2 decades. I use my MacBook for various things, work, pleasure and serious. I am a diabetic person and one of the things I use computer technology for is tracking and controlling my medical condition. Regrettably, none of the medical companies support the Mac OS X platform. I use A Medtronic Insulin pump to deliver my insulin. This is a great device and allows me to wirelessly upload data from it to a computer and specifically into a web-based database system called CareLink. This currently only available on a Windows PC and with Microsoft explorer (Yuck). For this reason, I keep an old DELL laptop running XP for this purpose, which I hate, and I woould rather use the desk for something else. I am informed that Medtronic are planning to make CareLink available through a MAC, sometime early next year. But, what do I do in the meantime and what if this delivery slips. I know it is possible to run windows on a Mac: 1) I am reluctant to do this because; i) Why put windows on a MAC? I want to leave windows behind, ii) Virus; Although Mac OS X is relatively virus free, QUESTION: Would windows provide a virus path that to get at my Mac files?