Vista Activation

[tcash11]

Ok, so I have been running RC2 on a virtual machine for awhile, but I finally broke down and went and bought Vista Ultimate full version for 400 bucks. I dont think im ready to bail on my current xp install, so I want to do another VM with this but am concerned about what will happen when Im ready to migrate to actually running it as the host OS with a clean install on my current machine, or buy a new machine (that will probably come with Home Basic) and want to put it on there. What is the deal with activation? I have read numerous articles on the subject but still do not have a clear picture on reinstalling Vista on a new machine after I have already activated it once. I mean I know it can be done (I mean legally I have to be allowed to install it anywhere I want as long as that is the one and only place it is actually used), but has MS made it difficult? What hoops am I going to have to jump through?