I'm just a little worried about what might happen. Not to mention that each and every re-install of Windows will rely on both versions of he CD, remaining intact. And there are license things I wonder about, such as is it OK to have Vue 3 AND 4 at the same time? I'm still kicking myself for not having Vue 2, with all who ask about it and I can't answer, so I don't want to forget how Vue 3.1 works, and I DO want to have an ongoing referrence. :)