i have Windows XP from my Virtual PC disks. i understand this is a licensed version of XP. well, now i have a new Mac Pro and i used VPC on my old G5. can i buy an upgrade version of Vista to install on the Mac Pro using boot camp or does XP need to be installed first?<br><br>I ask because i read the directions for how to get Virtual PC installed for use with Boot Camp and i think i'd rather just buy the full priced version of Vista before i try getting VPC's windows to work. egads! TIA.<br><br>