Using Namespaces?

I am stuck. I need to know how I should create a namespace of my own and use it in another script. How would I do this?

Here is a simplification of what I have that doesn’t work.

//script a:
using UnityEngine;
using System.Collections;

namespace Enemy {
     public class EnemyController : MonoBehaviour {
          string name;
     }
}


//script b:
using UnityEngine;
using System.Collections;
using Enemy;

public class AI : MonoBehaviour {
     EnemyController enem;
     enem.name = "geoff";
}

You don’t want to use a Namespace, this is much simpler.

Follow this
http://unitygems.com/script-interaction-tutorial-getcomponent-unityscript/