I got a new MacBook Pro and an original Parallels Desktop CD. I made the instalation of the Parallels (and the registration on line) and the Windows XP too. However I decided to do it the way I knew: using the Bootcamp. Later a friend of mine suggests me to use a virtual machine to run the Windows program. I asked him to do it. But because I had the original Parallels CD with me he donne that making a download of an old version from internet (pirat program). Later, I decided to re-install the original Parallels over the pirat version and to do a new registration, using of course the original key and the same email. The message was that I could not make this registration because the key was already registred. Of course it was. I did that it before! So, how can I make the registration of the original product key? Do I have to uninstall both programs? (Windows and Paralles). Is it sure that after that the registration can be made? Is another simple way to make it? Thank you Rui