Primary Key Update

[5861king]

is there anyway of updateing the primary key which is called numberid. this is the command that i'm useing but i get an error message.

INSERT INTO number (numberid,firstname,lastname) VALUES('314','james','bower')

MySQL said:

Duplicate entry '314' for key 1


Please can someone help me
:p

[Mitrofan]

Is it possible that you already have a record with numberid='314'?