Make subforums look like top level forum

Ok, here's what I want to do. I have some subforums that are related to my main forum but are distinct subject matters. I would like to direct some of my visitors directly to these subforums via a unique url and redirect. The catch is I want these subforums to look like my main forum complete with users online, control panel, etc. I have searched these forums but haven't been able to find anything quite like this.....

[wacnstac]

I'm not sure if this is just a template thing or if there is code modification needed as well to do this. Let me know either way......