How to integrate a forum (punbb) into a GetSimple page

[Supertramp]

Okay, then I will use MyBB. Have you used the MyBBIntegrator Extension for integration? The problem is I don't know how to include the Forum into my template at a certain position between header and footer... just via include...? With MyBBIntegrator I get the following error, think it's a discontinued extension:

Cannot redeclare redirect() (previously declared in...

I also found the header/footer plugin for MyBB, how have you configured it? My footer/header are dynamically generated by GS. Just don't know how to connect my template with the forum in an elegant (dynamic) way.