Hay Guys, I'm currently in the process of writing a simple movement system. As you can see from the attached image, the main camera is looking over the cube.

I have wrote the following script which basically moves the cube forward (with varying speeds)

var walk_speed : int = 30;
var run_multipler : float = 1.5;

function Update () {
    if( Input.GetKey("w") ){
        move_speed = walk_speed;
        if( Input.GetKey( KeyCode.LeftShift ) ){
            move_speed = walk_speed * run_multipler;    
    }       
        transform.Translate(0, 0, ( Time.deltaTime * move_speed ));
    }           
}

How do i implement a "rotate towards mouse". Wherever the mouse is pointing, the cube will rotate towards that point.