ok, well i just created a new user account just to test this out and figure it out, what it seems you have to do is, start up ichat, and it gives you that welcome screen, hit continue, then its going to ask for the chat information, all you have to do is enter your name, first & last, or even just put a space or two in each one, hit continue, and continue through the screens until ichat opens up, and then you can access the prefs menu without having an AIM or .Mac account