I am a programmer who has been bumped up to system admin. So my sysadmin knowledge is limited. We have several servers running Windows Server 2003. We need to replace one of the servers and the powers that be want the latest and greatest operating system. The domain controller will continue to run on 2003. Will 2008 play nice within this configuration or will it try to take over? We had an issue previously with trying to add in a server with Small Business Server 2003 that we ended up having to install standard 2003 on.