Where ADMINISTRATOR is de name of the user to add and PASSWORD the password you want to give. Name the file makeadmin.txt From the command prompt in de RUN directory enter: scdbutil <makeadmin.txt
After this has run you can now login as administrator with the name and password you put into the file. You can now repair what you want, like give new passwords etc.
This method has a lot more uses but thats for you to find out.
NB. Sometimes there is a restrictions on how the username should be build up like UPPERCASE or lowercase only. Make sure to comply with this. If the user has to be existing in de db wait for the globallist to refresh or restart the server.