[Forum] Homepage URL Problem, Won't Go To Forum URL

[HeWatchesOverUs]

When I go to "www.mydomain.com" it goes to my hosting website and when I go to "www.mydomain.com/forums" it goes to where I want it to.

How do I set it where when someone goes to "www.mydomain.com" that it will atuomaticaly take them to "www.mydomain.com/forums" which would be my homepage that comes up?

Thanks in advance!