Can you make so that the new message form shows up and you have to fill it out for all entires regardless of your group. I want it so that even administrors and users have to fill the out the form for every guestbook entry (I anticipate some users posting here, not just guest).
As far as i understood you, you need to adjust Users groups permissions in Control panel->Users » User groups » Set permissions for all groups->Guestbook->Add new entries
Also, can you make it so that the info from the new message form shows up with the post? Current I only see the name show up.
It does show up by default. You might want to restore the Appearance of entries template. (maybe you have made some changes there). Or provide a website name for us to check.