Hack to demote a PDC to BDC when all else fails

********** WARNING WARNING WARNING **************************************

This procedure is NOT supported by Miscrosoft, BUT we have used it in
simulation testing and had no problems.

BEFORE PROCEDING MAKE SURE YOU HAVE A RECENT BACK OF THE REGISTRY FOR
****BOTH**** MACHINES!!!!!!!!!!!

Forcing a Demotion of a PDC to a BDC =============================

Abstract: If circumstances required promoting a BDC to a PDC while the PDC was
unavailable, then an error will be encountered when the initial PDC does 
become available. To resolve this situation, the registry of one of the PDCs 
will have to be changed to demote it to a BDC. The server with the most 
recent version of the registry should be kept as the PDC and any others
demoted to BDCs. If necessary, a BDC can be promoted at a later time.

Procedure: change key \\Security\Policy\PolSrvRo value 03 to 02

(1) Run the registry editor utility (Regedt32.exe) from an icon or by
    typing start regedt32 from a command line.
(2) From the Registry | Select Computer menu option, select the desired
    server.
(3) From the HKEY_LOCAL_MACHINE window for this machine, drill down to
    open the path: Security\Policy\PolSrvRo
(4) Click on the PolSrvRo key and change the first hexadecimal octet
    from 03 to 02.
(5) Exit registry editor.
(6) Reboot the server.

NOTE: In order to obtain access to HKEY_LOCAL_MACHINE\Security you will
most likely have to use the permissions menu option as the Security
key is normally grayed out an unavailable.

Backup one step