Since there are many things that can go wrong with virtual OS software, it is very likely that you (like me) will be forced to install windows multiple times. But this gets rid of you permitted installs of Windows, and your product key soon becomes worthless. What happens if you have to activate Windows more than 3 times? In reality, I'm not using it (nor have installed it) on more than 3 computers... So what happens when you can no longer use your product key? Ask Microsoft for more activations? Something tells me that won't work.