Using a Microsoft Outlook 2007 account, you can share and view other people’s calendars. To view shared calendars, you must have Microsoft Exchange, a collaborative-communications system used mostly by organizations and businesses. Once you view a shared calendar for the first time, you will have access to it from your Outlook account.
Open your Microsoft Outlook 2007 account.
In “Calendar”, go to your “Navigation Pane” and click “Open a Shared Calendar”.
Type the name of the person whose calendar you want to access in the “Name” box. You can also click “Name” to bring up your address book. Click “OK". The shared calendar appears next to any other calendar that you are already viewing.