Don't have categories with only one forum in them. It's messy. Combine several forums into one category. My suggestions for that are as follows:
Arcade Zone-->Virtual Zone, RPG Zone
General Zone-->Off Topic Zone, Spurts Zone
Creativity Complex-->Art Zone, Engine Shed
Leave the Robot Zone as is and baleet the Intro Zone altogether.
Also, give the place some focus. Currently, why does the forum exist and why should people join? These are very important questions one must ask himself/herself when building a forum. If it doesn't stand out as being unique in some way, it better be superior than similar forums.
That's all I've got for now. If ProBoards are anything like they were when I ran a board on there a hundred years ago, then you should be able to customize it a ton. Have fun!
