MS Outlook 2003 public folder master calendar

I’m hunting for a way to create a “master” calendar for conference rooms. Currently each conference room has its own calendar in the public folder, but we are looking for a way to view all of these at once – i.e. a single calendar showing all events in all conference rooms at a glance. The ‘View Group Schedules’ feature is not sufficient for our current needs, as it goes up to only one week at a time, and is not printable in any kind of friendly format.