Hi. I have a SBS 2003 server standard edition running. I would like to add an old Windows 2000 Server computer to act as an additional DC for fault tolerance. I am aware that there can only be one SBS 2003 server in the network. Can i still make the old win2k server as an additional domain controller and accepting user authentication in case the main sbs 2003 server failed on me? Had anyone here tried this out before? Please advise. Your help is greatly appreciated.