transform.position not a member???

I have no ideaaaa why im getting this error...somebody please help!!!

ERROR: Assets/Standard Assets/Scripts/FollowPlayer.js(6,50): BCE0019: 'position' is not a member of 'UnityEngine.GameObject'.

var lookAtTarget : GameObject;
var speed = 1;

function Update() 
{
    var dist = Vector3.Distance(lookAtTarget.position, transform.position);

    if (dist < 100)
    {
        transform.LookAt (lookAtTarget.transform); //look at player
        transform.Translate (0,0,speed*Time.deltaTime); //move toward the player
    }
}

All im trying to do is have an enemy move towards the player when in range...help please

You should have lookAtTarget.transform.position not lookAtTarget.position.

Your lookAtTarget var should be

var lookAtTarget : Transform;