Microsoft has written a Knowledge Base article, Q251067 - WINS Registry Parameters for Windows 2000. Quote:

This article gives a list of parameters for Windows Internet Name Service (WINS) on Windows 2000 Server that you can modify using Registry Editor (Regedt32.exe or Regedit.exe). You can configure some of these parameters by using Microsoft Management Console (MMC) for WINS.

The Registry parameters for WINS service are specified under the following registry key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Wins\Parameters

This key lists all the non-replication related parameters needed to configure a WINS server. It also contains a \Datafiles subkey, which lists all the files that are used by WINS server to initialize and reinitialize its local database.