A new demo has been added in the Exchange Server 2003 demo portion.The detail of this demo is

Title: How to Select a Primary Address for an E-mail Recipient Policy in Microsoft Exchange Server 2003

Objective: The objective of this demo/tutorial is to teach you how to select a primary address for an e-mail recipient policy in Microsoft Exchange Server 2003. If you have added multiple e-mail addresses of the same address type, you must select a primary address. The primary address is the address that appears in the From field of the e-mail message.By default, the first address created for each address type is the primary address and appears in bold in Generation rules. If you created more than one address for an address type, select the address that you want to be the primary address.

If you are a subscriber, then click the Demos link in the navigation menu to view the complete list of demos.