Registry Editing! Urgent Help

Hey everyone, I recently downloaded Microsoft Office off of a torrent aswell as the registry edit to make it genuine. Anyway it comes in a registration editor file and as soon as you click and accept it installs it. Now thats all well and good.

The problem is I want to remove these registry edit files now, is there any easy way to do it, as I do not know which individual tree and root files it are in the actual registry.

unless you did a backup of the registry before you edited it you might be out of luck.

open the registry file in notepad, and it will tell you what it changed.
but not what it changed it from.