Exchange 2007 SP1 Virtualisation and Licensing Announcementshttp://blogs.technet.com/jkruse/archive/2008/08/20/exchange-2007-sp1-virtualisation-and-licensing-announcements.aspxTwo big announcements for Exchange 2007 SP1: Microsoft now supports Exchange Server 2007 SP1 running on Hyper-V or other hypervisors validated under the Microsoft Server Virtualization Validation Program (SVVP) . Microsoft is waiving its 90-day licenseen-USCommunityServer 2.1 SP1 (Build: 61025.2)