lost my menu

So I had some confusion with my main site menu.  It was displaying odd links that were not what I wanted them to be.  Then I found out there is a seperate menu for the forum.  But this was after I had changed the wpfro menu to resemble my main menu.  Then when I went to the forum imagine my surprise when the menu on the forum was all screwed up.

So how do I get my original forum menu back?

Thanks