hey, i just upgraded my 8900 to os 5. something. basically i have removed the lock and silent keys and used to use the left side button to lock, and * and call answer buttons to unlock. i am nit able to assign the left side key to lock keys, and also i am not able to unlock the keys using * and call answer. is it still possible to do this on 5.0, does it require different input of keys to unlock?