I really did try to search for the answer on this because I know it's been discussed before, but I couldn't turn any matching threads up.

I want to have other pages on my site that are unrelated to threads to show up in the Who's Online page.
I made a test.php page. I made sure that the cookie prefix is set to "/" for the whole site. I included the path to main.inc.php, I copied the authentication code, I added a line to the online.php language file... but nothing, I'm not getting past the authentication.
Can someone please either give me the answer in words of one syllable, or direct me towards some older threads where this has already been solved?
Thanks!