i'm upgrading to a newer comp soon and i need microsoft office but i've already used up all 3 licences. how do i unregister microsoft office on my old comp so i can give my new comp a licence?
Just uninstall it.
If needed, call up MS and say that you've upgraded your computer and needs to move those 3 licenses to the new computer.
Uninstall and use the same license key in the new com. As long as no 2 same licenses are connected to the net at a time.