Exchange 2000, public folders in Outook 2000

I have 3 different public folders setup in Exchange 2000. Each one is a calendar for a conference room schedule. In Outlook 2000 I click on my calendar and I want to setup a meeting in one of these conference rooms. When I choose the conference room to "invite" them I cannot see the schedule it shows no information. How can I get this to show the information stored in the public folder calendar? Thanks