Forgive me if I misunderstood your question but the new Parallels beta 3 allows for the use of the bootcamp drive. You install bootcamp, windows XP with bootcamp and then install the Parallels beta 3. You only need to activate Windows Xp once inside of Parallels and then you are good to go. If you have purchased Parallels then you can use that serial number for the beta and the next upgrade of Parallels will have this feature in it. I use it since it came out and love it. I boot into windows from bootcamp to game but run Parallels under Mac OS X to listen to audio books while I am working on my Mac Book Pro.