I tried to install a Version of Exchange Server 2007 on the beta 3 of MS Windows Server 2008, but the installation fails and show's the error message, that the exchange 2007 server couldn't be installed on that OS. Had someone the same problem, why can't you install the new Exchange on the (in future) new Server-OS?? Or isn't that only impossible because of he beta?? It's a Datacenter test version of Server 2008 beta! Thank you for your help, Greets