It's quite common to create a Calendar in Public Folders, and use that as a
shared calendar, but you can't access it using POP, which will only show you
your Inbox and Sent Items folders.  If you used IMAP, then you could access
the folder, but the appointments would be converted to an email message with
a link to the OWA address for the appointment.  Basically, if you want to do
anything properly with Calendars, you will need to use Outlook, but not in
POP or IMAP mode.

Lee.