This from Outlook help:
You can share calendar information with other people by using Microsoft
Office Outlook 2007 in many ways.
In Calendar, in the Navigation Pane (Navigation Pane: A column that provides
access to folders used to organize your information. Click a folder to show
the items it contains. It also includes the Favorite Folders section and
buttons to switch between Mail, Calendar, Tasks and other views.), there are
several links to help you get started quickly with calendar sharing.
This article describes the ways to share calendar information by using the
links in the Calendar Navigation Pane.
The links that you see will vary, depending on the accounts that are
configured in your Outlook profile.
