A new demo has been added in the Windows Server 2003 demo portion.The detail of this demo is
Title: How to Create a Site Link Bridge in Windows Server 2003
Objective: The objective of this demo is to teach you how to create a site link bridge in Windows Server 2003.An Active Directory object that represents a set of site links, all of whose sites can communicate via some transport. Typically, a site link bridge corresponds to a router (or a set of routers) in an Internet Protocol (IP) network. By default, the Knowledge Consistency Checker (KCC) may form a route through any and all site links in a transitive manner. If this behavior is turned off, each site link represents its own distinct and isolated network. Sets of site links that can be treated as a single route are expressed through a site link bridge. Each bridge represents an isolated communication environment for network traffic
If you are a subscriber, then click the Demos link in the navigation menu to view the complete list of demos.