Setspn.exe - Windows 2000 Resource Kit Utility
|Setspn.exe - Manipulate Service Principal Names for Accounts
This command-line tool allows you to manage the Service Principal Names (SPN) directory property for an Active Directory™ directory service account. SPNs are used to locate a target principal name for running a service. SetSpn allows you to view the current SPNs, reset the "host" SPNs, and add or delete supplemental SPNs.