No, real names aren't a defined field in this software. I did just add a custom field that will show up in everyone's profiles, but it will require everyone to enter their name. I've updated mine so you can see what it looks like.
Thanks Carl, I used to add the "real name" as new members registered using something other than a real name. Unfortunately, this information didn't transfer to the new forum format. So adding them in would be tedious and time consuming. Besides I doubt I would remember them from the old forum..