The first four downloadable guides (Word docs) for Exchange 2007 are available for download from the Microsoft Download Center.
Deploying a Standard Exchange Server 2007 Organization: http://go.microsoft.com/fwlink/?LinkId=82170
Deploying a Simple Exchange Server 2007 Organization: http://go.microsoft.com/fwlink/?LinkId=82171
Deploying a Large Exchange Server 2007 Organization: http://go.microsoft.com/fwlink/?LinkId=82172
Deploying a Complex Exchange Server 2007 Organization: http://go.microsoft.com/fwlink/?LinkId=82173
Additional guides will be forthcoming. Download, read, enjoy.
