You can ONLY install Ex2007 SP1 on 2008, so yes, you will need to integrate SP1 into the RTM version before installing. Jon Galbreath MCSA/MCSE/Security+ Network/Systems Administrator International Studies and Programs Ph: 517-884-2144 [log in to unmask] From: MSU Network Administrators Group [mailto:[log in to unmask]] On Behalf Of Ehren Benson Sent: Wednesday, May 14, 2008 11:33 AM To: [log in to unmask] Subject: [MSUNAG] installing ex2007 RTM on server 2008 incompatible? Does anyone know for sure if you need the SP1 integrated media to install EX2007 on Server 2008? When I try using the RTM media I get errors for every role saying the version of the installed OS cannot be used with EX 2007. Thanks Ehren J. Benson, MCSE Windows Systems Administrator Department of Physics and Astronomy Michigan State University 1209 A Biomed Phys Sci [log in to unmask] 517-884-5469