MyBB Community Forums

Didn't find anything after searching the forums. So here's my question.

How can you have your forum integrated with your main login system (the one used to access your main site)? I would like to know so that users don't have to register two times (once for main site and once for forums)

Thank you much!

There are some tutorials in the "User Submitted Tutorials" forum which describe integrating your site into MyBB.