i need a player list help please

heres my script i need it to check the player list to make sure that there is player listed before you can log in

 #pragma strict
 
 var playercount = 0;
 
 var usernames : String = "";
 
 var passwords : String = "";
 
 var user : String = "";
 
 var pass : String = "";
 
 var create : boolean = false;
 
 var home : boolean = true;
 
 var playeradded : boolean = false;
 
 var player = "";
 
 var logged : boolean = false;
 
 var playerlist = new Array();
 
 function Update()
 {
     if(playeradded)
     {
         player = usernames + passwords;
     }
 }
 function OnGUI()
 {
     if(home)
     {
     GUI.Box(Rect(0, 0, 100, 50), playercount.ToString());
     
     
         if(GUI.Button(Rect(0, 50, 100, 50), "create"))
         {
             create = true;
             home = false;
         }
         user = GUI.TextField(Rect(100, 0, 100, 25), user);
         pass = GUI.TextField(Rect(100, 25, 100, 25), pass);
         
         if(GUI.Button(Rect(100, 50, 100, 50), "log in"))
         {
             if(player == user + pass)
             {
                 logged = true;
             }
             else
             {
                 logged = false;
             }
         }
     }
     
     if(create)
     {
         usernames = GUI.TextField(Rect(0, 0, 100, 25), usernames);
         passwords = GUI.TextField(Rect(0, 25, 100, 25), passwords);
         
         if(GUI.Button(Rect(0, 50, 50, 50), "home"))
         {
             home = true;
             create = false;
         }
         if(GUI.Button(Rect(50, 50, 50, 50), "create"))
         {
             playercount += 1;
             playeradded = true;
             home = true;
             create = false;
         }
     }
 }