http://blogs.technet.com/aralves/archive/2007/01/23/technet-24-hours-of-exchange-2007.aspxTechNet Webcast Series: 24 Hours of Exchange Server 2007 Get a comprehensive look at Microsoft Exchange Server 2007 with the new "24 hours of Exchange" series. Our Exchange experts cover in-depth topics such as deployment and migration, the new ExchangeenCommunityServer 2.1 SP1 (Build: 61025.2)