So I've got the same problem as the buddy who started this forum, and this is what i've done thus far (essentially waste time):
I want to integrate my invision forum into my WordPress page. Except, I've got two columns for my regular site design, which is fine. I want the forum to be placed ontop of both the columns. So what I did was create a new, regular html page, copies all the html over from my wordpress theme, erased the "content", so now I've got my header, my footer, everything, except the content in the middle. When I type in random gibberish where the content used to be, it works fine.
I'm working with Invision here, so what I've done, is I've removed the header tag from invision, so now when I open up my forum (standalone) it looks plain and simple.
Now my question is, without switching from my invision board, is it possible to place my board inside my template? Thanks.