whats wrong with this script

my script is for moving around litteraly plz tell me whats wrong with it

var speed = 3.0;
var rotateSpeed = 3.0;

function Update () 
    var controller : CharacterController = GetComponent(CharacterController);

    //Rotate around y - axis
    transform.Rotate(0, Input.GetAxis ("Hoizontal") * rotateSpeed, 0);

    // Move forward / backward
     var forward = transform.TransformDirection(Vector3.forward);
     var curSpeed = speed * Input.GetAxis ("Vertical");
     controller.SimpleMove(forward * curSpeed);

@script RequiresComponent(CharacterController)

Well, like Kourosh said there's nothing really wrong except that you don't use Time.deltaTime to compensate the framerate and to make the movement/rotation time based instead of frame based.

Change those two lines:

transform.Rotate(0, Input.GetAxis ("Horizontal") * rotateSpeed * Time.deltaTime, 0);


controller.SimpleMove(forward * curSpeed * Time.deltaTime);

You will have to adjust the rotation speed to match your needs. It will be in degrees/sec. The movement speed is in units/sec.

edit I've just found a typing mistake: the axis is named "Horizontal" by default not "Hoizontal".