programs that have to be registered are programs like Adobe Photoshop or something like that, say you installed it on a USB on computer 1 and registered it, if you moved the USB to say computer 2/3/4/5/etc then you would have to re-register it.
My point is my dont need to be re-registered, once they installed on a USB or something you can put it in computer 1/2/3/4/5/etc and you will not have to register it
Hope that sounds better.