Setting the IsDomainMaster parameter entry to True or Yes makes that computer a Preferred Master Browser which has priority over other computers in master browser elections. Whenever a preferred master browser starts, it forces a browser election. Any computer running Windows NT Workstation or Windows NT Server can be configured as a preferred master browser. If no other condition prevents it, the preferred master browser will always win the election. Set the parameter in the following registry path:

Hive: HKEY_LOCAL_MACHINE
Key: SYSTEM\CurrentControlSet\Services\Browser\Parameters
Type: REG_SZ
Name: IsDomainMaster
Value: True

See Windows NT Domain Browse Parameters for a background. See Suppress browse event messages for registry hack to suppress election messages in the event log.

For the beginning NT admin.