Well showing a login box to unregistered viewers in vb is a vb setting. Honestly I can not say exactly how to do it since I have never done this but I beleive you need to set all forums to no view for unregistered users.
I see...well I thought since pp is enhanced for vb, once pp installed means clicking gallery is the same as clicking other vb features like calendar for ex. Anyway, I'll try to figure out how. Thanks man