What version of Windows are you using? In theory, as far as Vista is concerned, I think you can only legally install Vista Ultimate, and I think Business, in a VM.
Yes, subject to the above if you're using Vista, get a telephone activation for the second installation. So long as you emphasize that it's on the same machine they'll give you another activation key.
Using Windows from BootCamp you will be able to use the full capacities of your computer, ie graphics card, if you want to do gaming etc
Salamat
Last edited: Jul 31, 2007