Configure Entourage to Open a Shared Mailbox or Calendar
If you have been granted permission to access another user’s folder or a shared calendar within Exchange, it is possible to access that folder or calendar in Entourage. However, you’ll need to manually edit the settings for the connection. To open other resources, go to File and Open Other User’s Folder. Select the type of access you want (Calendar, Inbox, etc.), then click on the Address Book button. Perform a search for the mailbox or calendar you are accessing, then select the appropriate entry and click the Advanced button. In the Server Address field, you should add the following text after “mail.colostate.edu”:
/exchange/shared_mailbox_address@mail.colostate.edu
Note that the appropriate e-mail address to add is always listed on the line immediately above the server address field, and must be entered exactly as it appears in order to gain access. There appears to be a problem with using cut and paste on this screen, so you may need to retype the address manually. Here is an example of what your settings should look like:

