Transitioning to Active Directory Site-Based Routing

Are you still waiting to make the transition from Microsoft Exchange Server 2003 or Exchange 2000 Server to Exchange Server 2007? You're really going to like all the commands available in the Exchange Management Shell - that's a pretty cool feature and one that even administrators who are hooked on wizards can quickly learn. And you're probably pretty excited about implementing server-based rules and all the anti-spam improvements. But maybe you're hesitant about the idea of collapsing all your routing groups and maintaining mail flow while you systematically upgrade your Exchange organization. No problem. Just let me explain! 

Continue here.