public void Start(String id, String serverIp) {
		try {
			//  Ͽ  ûѴ.
			Socket socket = new Socket(serverIp, 7777);
			System.out.println(" Ǿϴ.");

			Thread sender = new Thread(new ClientSender(socket, id));
			Thread receiver = new Thread(new ClientReceiver(socket));

			// Ŭ̾Ʈ  
			sender.start(); // sender  
			receiver.start(); // receiver  
		} catch (ConnectException ce) {
			ce.printStackTrace();
		} catch (Exception e) {
		}
	}