Run LAC (License Activation Center), menu Options -> Server configuration:
Enter your [connection api-key, pep login and password], change [local server port] and [bind address] if needed.
Connection api-key - secret phrase that allow you LAC connect to gateway
(get it from e-mail, that we send after registration).
Access guid - unique identifier of your LAC.
Local server port - Local port on your PC, LAC listening requests from users on it.