I was thinking about given a friend my P5 when I got P6 and got use to it. Now I came to think, that maybe that isn't possible, because my P6 is an upgrade for P5 (I know P6 can run without P5) so maybe I'll have to keep P5 to keep P6 legal? Anyone knows? If I can give P5 to my friend, what do I have to do so she can reg it?