I've got a missile script that uses a few other scripts (like an explosion and MoveObject script), but I can't figure out how to add, access, and use them through this script. Take a look at my code, what do you think I'm doing wrong?

p.s. don't question the use of constantforce here, it's just for realism.

Condensed Version (the main problem areas--just ask if you want to see the rest)

//needed to access script MoveObject, it must be attached to a GO
var emptyGO : GameObject; 
var moveObject : MoveObject = emptyGO.AddComponent(MoveObject); 

//needed to add explosionPrefab to the missile
public var explosionPrefab : Transform; 
var missileCloneScript = instantiatedProjectile.AddComponent(MissileClone);
missileCloneScript.explosionPrefab = explosionPrefab;

//this is what I'm trying to use for movement but I can't figure out how to access the script through mine
if (seek)
yield moveObject.use.Translation(instantiatedProjectile.transform, target.position, 2.5, MoveType.Speed);

Full Version (comments provide some more detail)

#pragma strict
var projectile : GameObject; //the actual GO of the missile, whose rigidbody is used for
  //instantiatedProjectile, and then is destroyed once launched.

//Pod, used for the start location of instantiatedProjectile. don't really need.
var Pod : Transform;

//boolean used for the firing of missile
private var missilefire : boolean = true;

//boolean used for the seeking action of missile
private var seek : boolean = false; 

//instantiated missile clone
private var instantiatedProjectile : GameObject;

//needed to access script MoveObject, it must be attached to a GO
var emptyGO : GameObject; 
var moveObject : MoveObject = emptyGO.AddComponent(MoveObject); 

//needed to add explosionPrefab to the missile
public var explosionPrefab : Transform; 
var missileCloneScript = instantiatedProjectile.AddComponent(MissileClone);
missileCloneScript.explosionPrefab = explosionPrefab;


var target : Transform; //miscellaneous variables
var smooth = 0.1;
var reloadTime = 0.5;
var ammoCount = 8;
var lastShot = -10.0;


if (seek)
yield moveObject.use.Translation(instantiatedProjectile.transform, target.position, 2.5, MoveType.Speed);
// ^this is what I'm trying to use but I can't figure out how to access the script


function Update () {

//stopping the y-motion effect that gravity created
 if (instantiatedProjectile.rigidbody.velocity.z > 10)
 {
 instantiatedProjectile.rigidbody.constantForce.force = Vector3(0,0,0);
     instantiatedProjectile.rigidbody.velocity.y = 0;
        seek = true;
 }
}




function FixedUpdate () {

//missile tracking process
 if (seek)
 {
 //instantiatedProjectile.transform.position = Vector3.MoveTowards (instantiatedProjectile.transform.position, target.position,Time.deltaTime * 5);

 // ^ This worked, but when the missile got about 10 units close to the target, 
 //   it seemed to repel and started moving away.

 instantiatedProjectile.transform.LookAt(target);
 }
}



function Fire () 
{
 if (Time.time > reloadTime + lastShot && ammoCount > 0) 
 {
 //creating a firing sequence, instantiating clones, and destroying GOs/adding gravity for realism
  if (missilefire)
        {   
            instantiatedProjectile = Instantiate (projectile, Pod.position, transform.rotation);
            Destroy (projectile);

            instantiatedProjectile.rigidbody.useGravity = true;
            yield WaitForSeconds(0.5);
            instantiatedProjectile.rigidbody.useGravity = false;
            instantiatedProjectile.rigidbody.constantForce.force = (Vector3.forward*10);
            yield WaitForSeconds(reloadTime);
            missilefire = false;
        }    

 //Physics.IgnoreCollision(instantiatedProjectile.collider, transform.root.collider); 
 //not really needed

 lastShot = Time.time;
 ammoCount--;
 }
}