Hi guys, I administer a small sbs2k3-windows xp network. We have one sbs2k3 domain server with exchange 2k3 and one windows 2003 stan dard server, which is just a member of the domain (NOT member domain control ler, yet anyway). The SBS2k3 machine was initially sbs2000 but was upgraded a few months ago. Normally I don't upgrade OS's since certain things tend to corrupt as was th e case with our sbs2000 to 2k3 upgrade. At this moment, everything works reasonably well but I would like to have th e option to reinstall the domain controller in case something goes wrong. How can I do this? I know that reinstalling the server and then restoring a system state backup would not change anything as system state backups include the registry, whi ch is probably the most corrupted part of the OS after an upgrade, thus I wo uldn't gain anything. I cannot transfer the domain controller roles to our windows 2003 standard s erver, as a sbs2k3 installation must be the only domain controller in any ne twork, thus I would not be able to transfer the roles back, as I see it. Is there anything else I can do to do a clean reinstall of our dirty sbs2k3 installation? Of course I could recreate AD and group policies etc (since it is a small ne twork), but this could easily become a very time consuming - as well as high ly error prone - task for me to do. I hope you can help me. Best regards Andreas