mojo is perfect for my needs except that I need a more robust forum. If mojo is installed at the site root, is it possible to install an "external" forum in a subfolder (thinking specifically of Simple Machines Forum, a PHP app)? The external forum would use a different database.

I guess I should have been more specific. :)

Does mojoPortal need to touch (scan/alter/change) all files in the folder where it's installed (which would be the site root in my case)? Or does it ignore files that are not part of its content. I'm not looking to integrate an external forum into mojo, just wondering if another app can live side by side with mojo without any conflicts.

Ideally, I would like this setup:
mydomain.com - mojo
mydomain.com/forum - external forum app, mojo should ignore this folder as part of its content

Instead of this one:
mydomain.com/mojo - mojo install, mydomain.com would redirect to this subfolder
mydomain.com/forum - external forum app

Thanks for your help!