I am planing to upgrade my SBS server to 2008. Rightnow I am using Windows SBS 2003 Server. I want to upgrade the same to 2008. The server is also having Exchange 2007. So migrating directly to that can wipe out all the existing settings. I do not want to use old application of SBS 2003. But somehow it looks like that there will be conflict after upgrade. I need some advice that can help me to work on the same. I am looking for some valuable suggestion that can guide me for a stable upgrade. What I am trying to do is add the new server as a member server in SBS 2003. Then I will run adprep to update the AD schema. Once that is done I will promote SBS 2008 to additional DC so that Exchange is not affected. Then I will install Exchange on SBS 2008 and add the same to domain. I will migrate the data to the new setup with mailboxes, gpo, fsmo roles, etc and once everything goes well in the end I will remove SBS 2003. Am I missing anything.