Force User to Use Real Name as Signature

[jpapadpapa]

First, I'll just get to the point. Is there some way to force users to use their real names as signatures on every post? I have first name and last name boxes on the user profile page that are required. Can something be written that would automatically add those fields as a signature? Or, as I'm thinking about it, would there be a way to add real names under the usernames so they were always visible? That actually might be a better option.

Now for the background info: I am setting up a forum for a local group of which I am a part and they have had issues with some members anonymously doing things outside leadership and causing problems. Because of this, they are very leery of letting people choose their own usernames and being able to act anonymously in any way. However, I, being more into forums and how they work, really do not want to force everyone to use their real names as usernames. That just kind of bugs me and I don't see the necessity when you can easily click on Member List to see who is who. I do understand their concern to a point, though. So, I am trying to come up with a good compromise.

Any ideas?