I have a Multiplayer script here

 var spawnObject : Transform;
  
 var gameName : String = "level1";
 private var refreshing : boolean = false;
 private var hostData : HostData[];
  
 function OnGUI () {    
    if(!Network.isClient && !Network.isServer) {
        if (GUI.Button(Rect(Screen.width/5,Screen.height/7,100,20),"Start Server")) {
          startServer();
        }
        if (GUI.Button(Rect(Screen.width/5,Screen.height/7 + 30,100,20),"Refresh Hosts")){
           Debug.Log("Refresh");
           refreshHostList();
        }
        if(hostData) {
            for(var i:int = 0; i<hostData.length; i++) {
               if(GUI.Button(Rect(Screen.width/2,Screen.height/2 + 60,100,20),hostData[i].gameName)) {
                  Network.Connect(hostData[i]);
               }
            }
        }
     } 
  }
  
 function Update () {
     if(refreshing) {
         if(MasterServer.PollHostList().Length > 0) {           
             refreshing = false;
             Debug.Log(MasterServer.PollHostList().Length);
             hostData = MasterServer.PollHostList();
          }
     }
 }
      
 function startServer () {
    Network.InitializeServer(32,25001, !Network.HavePublicAddress);
    MasterServer.RegisterHost(gameName, "Tutorial Game", " this is a tutorial");    
 }
                
 function OnServerInitialized () {
    Debug.Log("server initialized");
    spawnPlayer();    
 }
  
 function OnConnectedToServer () {
    spawnPlayer(); 
 }
  
 function spawnPlayer () {
    Network.Instantiate(playerPrefab, spawnObject.position, Quaternion.identity, 0);
 }
  
 function OnMasterServerEvent(mse:MasterServerEvent) {
    if(mse == MasterServerEvent.RegistrationSucceeded) {
       Debug.Log("Registered Server");
    } 
 }
                
 function refreshHostList () {
    MasterServer.RequestHostList(gameName);
    refreshing = true;      
 }

for some reason the server works fine but when i open up a second copy of the game it doesn't act like their is two players in the game except the window that I made the server with, controls both it and the second window but I checked the box for "Run in background" therefore it isn't that but maybe i just implemented the script wrong I don't know... If I have this script what would be the proper way to add it to my game?