Question about grant user right to MySql

Sorry, all, but i couldn't fine any Mysql News group around, so i sent this message here, as i found php got a close relationship with mysql. could someone pls tell me how i can grant a user to logon to the database from any computer around the office? i had read a book and the book told me to type this command: Grant all on samp.* to username@% IDENTIFIED BY "password" The book said that the % is stand for the user can logon to the system at any computer! But i think mysql server take the % as a invaild character. Could somone pls tell me if there is another way to Grant the permission to a user which he can login to the system from any computer? Thx Jack jack@nedcor.com