2
Use the "Set Forum Position" box when creating/editing a forum from your admin panel, you can order them that way...give them each a number, 1, 2, 3, 4..etc according to the order you want them in. The lower the number is, the higher the forum is in the list. I personally go by 10's when im doing it incase I decide to put a forum in between them in the future I wont have to renumber everything