I currently have a single domain controller which also happens to be still running SBS 2003. I have migrated all other roles off of this server over the past two years and it is ONLY a domain controller now. I am looking to make one of my other servers, which are member servers running 2008 R2, a domain controller and then fully decommisioning this server for good. Does anybody have a step by step guide to doing just this? I recently migrated off of Exchange 2003 on this box and went to Exchange 2010 on a different box, so dealing with exchange is over with, now I just have to create a secondary domain controller on a 2008 R2 box and then shut this one down for good. Thanks in advance for any and all help!