[Lynne]

Well, a good place to start for that would be to copy the code in the showthread.php page that grabs the users browsing the thread (or the forumdisplay.php page which does the same only for the forum). It starts around line 1728. If all you want is the number, you can probably simplify that quite a bit - like you won't need all the stuff to do with the forumdisplay_loggedinuser template. The query gets it's data from the session table, so you'll want to modify the query to grab just sessions where the user has that page in the location field. I'm terrible at writing queries to work on live sites where I can only try it on a test site so I won't try with this one. Perhaps you can do it or someone else will wander in and try.