Another approach is to install an NT 4.0 BDC on your 4th server, take the
PDC offline for insurance, and promote the new BDC to PDC. Now you have
your new box as the NT4 PDC. Next, upgrade this PDC to Server 2003, install
AD, DNS, DHCP, WINS, etc. The existing BDCs will continue to see your new
Server 2003 DC as the PDC and will function perfectly. Be sure to check out
the Server 2003 deployment guide on upgrading NT 4.0 domain controllers
first.

Signature
Michael Allman
Windows Server Test Team
Directory Services Setup/Install APIs
This posting is provided "AS IS" with no warranties, and confers no rights.
> I have 3 NT4 servers, 1 local PDC and the 2 BDC's at 2
> remote sites. I now want to install a 4th server with
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>
> Any suggestions would be appreciated.