I've just released a tool to unlock a unregistered AHP.
The catch is you need a drive that has a registered AHP on it.AHP Lifejacket
will unlock your AHP on the new machine using info from your old drive. The included readme explains the process.
Also Activehomesoftware.com has a AHP installer they are selling which can be registered they also have registrations for Onalert, Smartmacros, iWatchout, Activephone & Myhouse online.
However just because they say the plugins are registered doesn't mean they'll work as the Software still points to X10 servers which are still off line.
I have tested this installer and it does work and plugins do register whether they all work is another story.
Smartmacros, Onalert and iWatchout should as these don't rely on the x10servers for much.
Active phone should work in wi-fi mode at least.