Forum Plugin Suggestion

First of all, thanks for the great Forum plugin. It's perfect for my needs and was a breeze to install and configure.

I do have one concern, and that is the fact that by default, the plugin uses my username as the author instead of my nickname. Most of the "how not to make it easy for hackers" articles I've read strongly advise against publicly displaying a user name with administrative rights.

How can I modify the PHP script so that the nickname is displayed as the author name by default, instead of the username? Granted, I could create a user with no admin rights exclusively for use in forums, but I want to make life as simple as possible for the owners of the blogs I host. Any suggestions would be greatly appreciated.