I've used both Parallels Desktop and VMware Fusion since the day that they were first released, but some time ago I settled on Fusion as the more satisfactory of the two for my purposes. However, VMware has seriously fallen down on the job with the last few versions, and indications are that Parallels has pulled ahead, so I am seriously considering converting to Parallels Desktop 5. However, before I do this, I need to know whether or not this will require reactivation of my Windows XP Home OEM VM. If reactivation is not required, then it's a no-brainer. However, if it is, then I definitely don't want to do it. Is there anyone else who has done this who can give me some information about this process?