OK got it working here:
http://www.extremeforums.com/forums/onlineusers.php
I did change one thing: I got rid of the first "if" statement so I didnt have to add the "?action=onlineusers" to the end of the url.
One thing i noticed:
if the user is on:
http://www.extremeforums.com/forums/onlineusers.php
Then it says they are on "Extreme Forums Main".... Any fix for this?
Thanks
~Chris