so, apparently you can't use parallels vm for oep xp pro if you've already installed the oem xp pro in boot camp. I'm attempting to use the boot camp partition as my VM in parallels. however, since it's an oem version of xp pro (recently purchased from newegg), i have an activation problem. using the my boot camp as the vm makes significant hardware changes to the computer and requires reactivation. all of this leads to a couple of questions: 1) i'm going to use parallels almost 100% of the time (if MS will let me reactivate). should I delete my old boot camp partition (which is MUCH too small at the current time anyway), and then just use my OEM XP pro as a VM in parallels? 2) if i delete my old boot camp partition, do i need to format the hard drive to make it usable by OSX? 3) it's my understanding that it is best to use FAT32 for a parallels install, is this accurate? Thank you to anyone who can assist me w/ this. it's been a frustrating couple of days.