Greetings, I am a licensed user of Logic 5.5.1 on the Windows PC platform. I am considering upgrade options that will also carry the added benefit of unlocking the authorizations for the exs24 mkII and the synths in the 5.5.1 windows version. I intend to run both Windows and Mac in my studio. I am looking to purchase a G5, upgrade to Logic Pro 6.4.1 or Logic Pro 7 and then be able to use the dongle on the Windows PC or the G5. I don't want to abandon the 5.5.1 Windows version because I want to continue to use VST plugins and instruments.