HP has published an overview of their expertise and offers for Exchange 2007. They should also have a precriptive architecture guide for running Exchange 2007 on the new blade servers very soon. Overview Guide (youmay notice a familar name on the top of page 3): http://h71028.www7.hp.com/ERC/downloads/4AA0-8074ENW.pdf Transitioning to Microsoft Exchange Server 2007 on HP ProLiantServers and HP Storage Works.This lays out some simple solutions that are ready to deploy Exchange 2007 on. http://h71028.www7.hp.com/ERC/downloads/4AA0-9163ENW.pdf More information: http://www.hp.com/solutions/exchange