How to create object using onCollisionEnter trigger function ?

I am trying to create a game object called ‘enemy’ using the trigger function. How can I create a object I just know how to destroy a specific object ?
In the code bellow I can destroy a object but I simultaneously want to create objects at a specific place.
thank you in advance.

function OnTriggerEnter (other : Collider) { 
if(other.tag == "Player"){ 
 Destroy(gameObject.Find("door"));
 Destroy(gameObject.Find("box"));
}
}

GameObject.Instance( the game object you want to create, the desired position, Quaternion.Identity); then rotate your new gameObject, good luck