1. A method of registering a shortcut name corresponding to a destination for a speech recognition system in a vehicle navigation system, the method comprising: receiving a destination to which directions are requested from the user; determining whether the received destination is a frequently requested destination; responsive to determining that the received destination is a frequently requested destination, receiving a shortcut name corresponding to the received destination as speech from the user and recognizing the shortcut name by speech recognition; and registering the shortcut name to a personal profile of the user.