I have just installed Parrallels on my Mac Pro. I had Boot Camp up and running fine for three months before hand so I decided to use the Boot Camp option when I installed. It worked fine except that Windows now asks me to reactive it due to hardware changes. The question is, if I reactivate Windows will it ask me to do it again when I boot into Windows properly and then when I run Parrallels or is this just a one off thing that happens after you install Parrallels? I'm do not want to reactivate it until I know the answer to this as I am not sure how many times you are allowed to do this. Oh and I am running Windows XP SP2. Thank you for any help.