UBB.threads PHP Forum Software Community Forums Resources and Customizing How Do I? Extend who's online to other pages?

Is it possible to have external pages register visitors info so it displays in who's online?

Example, if I have page2.php in my root directory, is there any way that I can add some code to that page (and of course add to the language file) so it displays "Viewing page2" on the who's online details page?