Failed access mysql host not allowed

ok everybody ^_^ are you use mysql on LAN and failed to connected the server?.. it's so simple about failed to connect mysql server. this is my trouble : i'm use delphi 7 and mysqlDAC for connection. i'm use ip 192.168.168.1 on server, i've 2 client and having ip 192.168.168.2 / 192.168.168.3, on ftp access mozilla it's works but my application still failed to connected. i try mysql front for checked connetion. i create new connetion mysqlFront on client, and i got message like this :


to many problem like that, do you remember  if mysql having user privilage?.. hahaha.. so i have client with ip 192.168.168.3 and it's connected with 192.168.168.1 by the way, when you add user privilage for this client?.. so that's is the great solution "ADD USER" like this (on phpmyadmin)
 :