[Routemaster]

I think I might have done something really dumb.
I bought ReviewPost and (with a little help from Chuck) set it up on my server yesterday. Essentially what I needed was a very simple, closed-circulation forum which would feature images posted by the webmaster, not by users. It looks as if ReviewPost is much, much more comprehensive and powerful than anything I will need, but it what it doesn't seem to include is templates that will enable me to build a basic forum.

I now notice that even this very forum is powered by vBulletin: does that mean I'll need to buy another script to get my site running? If so, can anybody suggest a forum application that looks like this (I modelled my layout on it) but doesn't cost another hundred bucks?

Thanks