I haven't experimented too extensively with Filestore, but I'm tempted to say it doesn't support this kind of reporting. I'm almost hoping there isn't as I've already hammered out a few hundred lines of code for a module to produces this kind of effect :)
We are running drupal on an apache server alongside another php/mysql based open source application called TUTOS (http://www.tutos.org). We would like to have a single login across both applications. When I say that I mean that when someone logs in, he is logged in to both systems.