How to do this?? Boinc Projects all user my Real name. BAM! login id is a shortened email address. So how do I say that BAM! User ABCDEFG is the SAME person as Robert Smith that all BOINC Projects are registered using this name.

You must use the same username, email and password with BAM! as you do with the projects. You can change your username here and then try to add your projects, and then if you prefer the new name change it back after they are all attached. This will, however, also change your name at all of the projects. They have to be the same.