Thanks, Terry.
The problem is that Wordpress doesn't necessarily have an SSI.php file like SMF. I mean, they have wp-config, but that doesn't seem to be doing anything. Maybe the problem could be that I'm using Buddypress?
All I really want to do is have my index page:
www.apstudygroup.com
redirect to my Buddypress site:
www.apstudygroup.com/users
But only if the user is already logged in. I don't know how Buddypress stores the session, and I don't know how to access the cookies. My index page does not employ Wordpress at all.
Thanks,
Ryan