Depends how many machines. If it is for a new installation I'd do one, archive it then use a goldbuild technique. Or you could build a scripted automated installation and build them that way.
I think though you might have existing machines. Since the settings will all be registry based why not try one of those products that snapshot the registry before and after a change and show you what got modified? You could then use regedit to save the changed key(s) as .reg file(s) which you could then deploy on each machine (either manually or automatically using GPO or some other method) to reproduce the changes