I have a big problem. This was my setup before the problem. Our Domain Controller is a Windows 2003 Std SP2 machine. We have a member Windows 2008 Server 2008 Enterprise SP2 running Exchange 2007 and the Backup Exec 2010 Media Server. The server 2003 DC packed up, and we are trying to do a restore. We are getting an error message from the Backup Exec 2010 which when we look it up says something about the operating system and service pack level on the source and destination server needing to be the same. I need help to restore the AD on the 2003 server?