Hi all On Win NT (PDC) exchange server 5.5 is running. I have added Win2k advanced server in windows NT domain usefully. Now I want to install exchange server 2000 on Win2k. I need to install Active directory which will make Win2k domain controller. I want to ask if this will make any problem as users are online now and will it be any problem if I install Exchange 2k in same network. I don't want to disturb NT domain as users are working online. Need your assistance