Can this be done? (subdomain with different forums?)

[Spaz21]

Hey everyone....

We have a site (www.j-body.com) which is currently running out car club site and message forums. We have a huge annual show (as well as other shows throughout the year) and rather than run a sepearate site for these shows I'd kinf of like to keep it on the same site but separate at the same time.

Is there a way to say have a link to bash.j-body.com (for our annual show) and when a user on the site clicks on it it essentially eliminates the general site forums and then displays the forums relavant to that show (Caravans, Events at the show, Awards, Photos, etc.)?

The main goal at the end of the day is to have separate sub-sites with their own forums that can share the same set of users so people don't have to re-register on each site.... and of course since it's a car club we're trying to avoid buying additional licenses if we can (obviously money is tight).

Any tips/tricks/pointers would be appreciated

Thanks.