'How to Prepare Active Directory and Domains http://www.microsoft.com/technet/prodtechnol/exchange/e2k7help/8e8464df-2d1d-4d68-82de-b0c158c549c3.mspx?mfr=true 'Upgrading to Exchange 2007 http://www.microsoft.com/technet/prodtechnol/exchange/e2k7help...