Firstly, back up ALL your .ahx files to separate media before you scrap your old XP machine. Secondly if you want to keep 3.296, back up everything in the AHP folder to separate media. Also you should back up your AHP license as well. If you don't have it, X10 should have it on file, contact then for it and keep it.
Also say hello to Bullwinkle J. Moose for us here.