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 please

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

Your lookAtTarget var should be

var lookAtTarget : Transform;