Since I am now using RootsMagic 5, I want to give my RootsMagic 4 disc and book to a relative. Can they just load it on their computer and then download the Ver. 4 update?  I have a registration # from the package that came as well as a different registration # in the email I got after ordering it.  Is it OK to do this and do they need to use the registration # to activate it? Dennis