diff --git a/java/resource/M.png b/java/resource/M.png
new file mode 100644
index 0000000..28fdd38
Binary files /dev/null and b/java/resource/M.png differ
diff --git a/java/resource/kop.png b/java/resource/kop.png
deleted file mode 100644
index 54fa21d..0000000
Binary files a/java/resource/kop.png and /dev/null differ
diff --git a/java/src/mimis/Client.java b/java/src/mimis/Client.java
index b458197..56b24c5 100644
--- a/java/src/mimis/Client.java
+++ b/java/src/mimis/Client.java
@@ -10,13 +10,14 @@ import mimis.device.wiimote.WiimoteDevice;
 import mimis.event.EventRouter;
 import mimis.event.router.GlobalRouter;
 import mimis.exception.event.router.GlobalRouterException;
+import mimis.exception.worker.ActivateException;
+import mimis.util.swing.Dialog;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 
-
 public class Client {
-    protected Log log = LogFactory.getLog(getClass());
+    protected static Log log = LogFactory.getLog(Client.class);
 
     public static final String IP = "127.0.0.1";
     public static final int PORT = 6789;
@@ -43,10 +44,20 @@ public class Client {
     public void start() {
         log.debug("Client");
         Mimis mimis = new Mimis(eventRouter, deviceArray);
-        mimis.start();
+        try {
+            mimis.activate();
+        } catch (ActivateException e) {
+            log.fatal(e);
+        }
     }
 
     public static void main(String[] args) {
-        new Main().start();
+        try {
+            String ip = Dialog.question("Server IP:", IP);
+            int port = Integer.valueOf(Dialog.question("Server Port:", PORT));
+            new Client(ip, port).start();
+        } catch (GlobalRouterException e) {
+            log.fatal(e);
+        }
     }
 }
diff --git a/java/src/mimis/GUI.java b/java/src/mimis/GUI.java
index 59494bb..2552fef 100644
--- a/java/src/mimis/GUI.java
+++ b/java/src/mimis/GUI.java
@@ -24,14 +24,14 @@ public class GUI extends JFrame {
     protected static final String TITLE = "MIMIS Manager";
     protected static final String APPLICATION_TITLE = "Applications";
     protected static final String DEVICE_TITLE = "Devices";
-    
+
     protected Mimis mimis;
     protected TextArea textArea;
 
     public GUI(Mimis mimis, Manager<Application> applicationManager, Manager<Device> deviceManager) {
         super(TITLE);
         this.mimis = mimis;
-        setIconImage(Swing.getImage("kop.png"));
+        setIconImage(Swing.getImage(Mimis.ICON));
         createFrame(applicationManager, deviceManager);
     }
 
diff --git a/java/src/mimis/Mimis.java b/java/src/mimis/Mimis.java
index 3305a87..8bc9db7 100644
--- a/java/src/mimis/Mimis.java
+++ b/java/src/mimis/Mimis.java
@@ -15,6 +15,7 @@ import org.apache.commons.logging.LogFactory;
 
 public class Mimis extends EventHandler {
     protected Log log = LogFactory.getLog(getClass());
+    public static final String ICON = "M.png";
 
     protected ArrayCycle<Application> applicationCycle;
     protected Device[] deviceArray;
diff --git a/java/src/mimis/device/network/NetworkDevice.java b/java/src/mimis/device/network/NetworkDevice.java
index 19a0def..5a4a999 100644
--- a/java/src/mimis/device/network/NetworkDevice.java
+++ b/java/src/mimis/device/network/NetworkDevice.java
@@ -73,10 +73,12 @@ public class NetworkDevice extends Device {
                 Socket socket = serverSocket.accept();
                 Client client = new Client(socket);
                 client.start();
-                log.trace("Client connected");
-            } catch (IOException e) {}
+                log.debug("Client connected");
+            } catch (IOException e) {
+                log.error(e);
+            }
         }
-        
+
         public void stop() throws DeactivateException {
             super.stop();
             for (Client client : clientList) {
@@ -116,7 +118,9 @@ public class NetworkDevice extends Device {
 
         public void stop() {
             try {
-                disconnect();
+                objectInputStream.close();
+                objectOutputStream.close();
+                socket.close();    
             } catch (IOException e) {
                 log.error(e);
             } finally {
@@ -127,11 +131,5 @@ public class NetworkDevice extends Device {
         public void send(Object object) throws IOException {
             objectOutputStream.writeObject(object);
         }
-
-        public void disconnect() throws IOException {
-            objectInputStream.close();
-            objectOutputStream.close();
-            socket.close();       
-        }
     }
 }
diff --git a/java/src/mimis/device/panel/Panel.java b/java/src/mimis/device/panel/Panel.java
index dcbb8cd..48c9f5a 100644
--- a/java/src/mimis/device/panel/Panel.java
+++ b/java/src/mimis/device/panel/Panel.java
@@ -8,6 +8,7 @@ import javax.swing.JFrame;
 import javax.swing.JPanel;
 import javax.swing.WindowConstants;
 
+import mimis.Mimis;
 import mimis.exception.worker.DeactivateException;
 import mimis.util.Swing;
 import mimis.util.swing.HoldButton;
@@ -42,7 +43,7 @@ public class Panel extends JFrame implements HoldButtonListener {
     Panel(PanelDevice panelDevice) {
         super(TITLE);
         this.panelDevice = panelDevice;
-        setIconImage(Swing.getImage("kop.png"));
+        setIconImage(Swing.getImage(Mimis.ICON));
         createControls();
         layoutControls();
         pack();
diff --git a/java/src/mimis/event/router/GlobalRouter.java b/java/src/mimis/event/router/GlobalRouter.java
index 9cae43e..a885de2 100644
--- a/java/src/mimis/event/router/GlobalRouter.java
+++ b/java/src/mimis/event/router/GlobalRouter.java
@@ -4,55 +4,96 @@ import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 import java.net.Socket;
-import java.net.UnknownHostException;
 
 import mimis.Event;
 import mimis.Worker;
 import mimis.event.EventRouter;
 import mimis.event.Feedback;
-import mimis.exception.event.router.GlobalRouterException;
+import mimis.exception.worker.ActivateException;
+import mimis.exception.worker.DeactivateException;
 
 public class GlobalRouter extends EventRouter {
-    protected Socket socket;
-    protected ObjectOutputStream objectOutputStream;
-    protected ObjectInputStream objectInputStream;
+    protected String ip;
+    protected int port;
+    protected Client client;
 
-    public GlobalRouter(String ip, int port) throws GlobalRouterException {
+    public GlobalRouter(String ip, int port)  {
+        this.ip = ip;
+        this.port = port;
+    }
+
+    public void activate() throws ActivateException {
         try {
-            socket = new Socket(ip, port);
-            objectOutputStream = new ObjectOutputStream(socket.getOutputStream());
-            objectInputStream = new ObjectInputStream(socket.getInputStream());
-            new Worker() {
-                public void work() {
-                    try {
-                        Object object;
-                        do {
-                            object = objectInputStream.readObject();
-                            if (object instanceof Feedback) {
-                                add((Feedback) object);
-                            }                 
-                        } while (object != null);
-                    } catch (IOException e) {
-                        log.error(e);
-                    } catch (ClassNotFoundException e) {
-                        log.error(e);
-                    }
-                }
-            };
-            return;
-        } catch (UnknownHostException e) {
-            log.error(e);
+            client = new Client(ip, port);
         } catch (IOException e) {
             log.error(e);
+            throw new ActivateException();
         }
-        throw new GlobalRouterException();
+        super.activate();
+    }
+
+    public boolean active() {
+        if (active && client.active()) {
+            active = false;
+        }
+        return active;
+    }
+
+    public void deactivate() throws DeactivateException {
+        client.stop();
     }
 
     public void event(Event event) {
         try {
-            objectOutputStream.writeObject(event);
+            client.send(event);
         } catch (IOException e) {
             log.error(e);
         }
     }
+
+    class Client extends Worker {
+        protected Socket socket;
+        protected ObjectInputStream objectInputStream;
+        protected ObjectOutputStream objectOutputStream;
+
+        public Client(String ip, int port) throws IOException {
+            socket = new Socket(ip, port);
+            objectInputStream = new ObjectInputStream(socket.getInputStream());
+            objectOutputStream = new ObjectOutputStream(socket.getOutputStream());
+        }
+
+        public void work() {
+            try {
+                Object object;
+                do {
+                    object = objectInputStream.readObject();
+                    if (object instanceof Feedback) {
+                        add((Feedback) object);
+                    }                 
+                } while (object != null);
+            } catch (IOException e) {
+                log.error(e);
+            } catch (ClassNotFoundException e) {
+                log.error(e);
+            }
+        }
+
+        public boolean active() {
+            return active = socket.isConnected();
+        }
+
+        public void stop() {
+            try {
+                objectInputStream.close();
+                objectOutputStream.close();
+                socket.close();      
+            } catch (IOException e) {
+                log.error(e);
+            }
+        }
+
+        public void send(Object object) throws IOException {
+            objectOutputStream.writeObject(object);
+        }
+    }
 }
diff --git a/java/src/mimis/util/Swing.java b/java/src/mimis/util/Swing.java
index 0c837b1..a99b5ee 100644
--- a/java/src/mimis/util/Swing.java
+++ b/java/src/mimis/util/Swing.java
@@ -20,7 +20,7 @@ public class Swing {
     }
 
     public static Image getImage(String name) {
-        return toolkit.getImage((getResource(name)));
+        return toolkit.getImage(getResource(name));
     }
 
     public static ImageIcon getImageIcon(String name) {
diff --git a/java/src/mimis/util/swing/Dialog.java b/java/src/mimis/util/swing/Dialog.java
new file mode 100644
index 0000000..e499b9f
--- /dev/null
+++ b/java/src/mimis/util/swing/Dialog.java
@@ -0,0 +1,18 @@
+package mimis.util.swing;
+
+import javax.swing.JOptionPane;
+
+public class Dialog {
+    public static final String TITLE = "MIMIS Dialog";
+
+    public static String question(String message, Object initial) {
+        return question(TITLE, message, initial);
+    }
+    
+    public static String question(String title, String message, Object initial) {
+        return (String) JOptionPane.showInputDialog(
+            null, message, title,
+            JOptionPane.QUESTION_MESSAGE,
+            null, null, initial);
+    }
+}