Multiple forums on one server

Hi,
Really sorry to post here in the wrong forum but I'm stuck with an old version of the forum (7.96) on a client's website which I do not have the time to upgrade to a newer version.

The client wants one public forum and another one for logged in users and of course, the two forums are messing with each other. All email's sent out from both forums contain links to either A or B.

So for example, when you register yourself on the public forum, you get a validation email saying "click this link" and it takes you to the private forum's url + validation page asp file.

I want these two forums to be completely separate.

Anyone up for this? I'd appreciate it *enourmously*. 

The forums are not running on the same database. The second one is basically a copy of the first but in another directory on the same server.