Just to update you guys/gals on this. Ive just got my pcpro mag in the post today, and it appears that not all versions can be upgraded. Ive double checked the info on Microsofts website and found this, so hopefully it will clear up a few questions for upgrading. Basically if you have XP home you can upgrade to any vista pack. However things are a bit awkward if your going from XPpro to a vista home pack. Take a look here to check for yourself. HTH. http://www.microsoft.com/windowsvista/getready/upgradeinfo.mspx