Shared Exchange 2000 calendar

I’ve been asked to create a “common” calendar for all my Exchange 2000 users. Ideally, the default calendar in Outlook 2002 would be this shared calendar. This one calendar would contain each users’s appointments, but each user would only see their own appointments plus other appointments from their active directory group(s). I’ve been searching the web and reading the Exchange 2000 Server Admin. Companion, but to no avail – I’ve seen nothing similar to this. I’d prefer to do this without resorting to third-party software, but I haven’t ruled that out. So my problems are thus: 1) how to change the default calendar in Outlook 2002 2) how to prevent users from seeing anything they are not supposed to see on this shared calendar. Thanks in advance for the help.

Infoguy