adding script to a clone

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--;
  }
 }