diff --git a/LoginGUI.java b/LoginGUI.java
new file mode 100644
index 0000000..78cf915
--- /dev/null
+++ b/LoginGUI.java
@@ -0,0 +1,98 @@
+import java.awt.BorderLayout;
+import java.awt.FlowLayout;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
+import javax.swing.JButton;
+import javax.swing.JDialog;
+import javax.swing.JPanel;
+import javax.swing.border.EmptyBorder;
+import javax.swing.JTextField;
+import javax.swing.BoxLayout;
+import javax.swing.JLabel;
+import javax.swing.JPasswordField;
+
+public class LoginGUI extends JDialog implements ActionListener {
+
+	private MyMail app;
+
+	private final JPanel contentPanel = new JPanel();
+	private JTextField address;
+	private JTextField user;
+	private JPasswordField pw;
+
+	/**
+	 * Launch the application.
+	 */
+
+	/**
+	 * Create the dialog.
+	 */
+	public LoginGUI(MyMail app) {
+		this.app = app;
+		setTitle("Login");
+		setBounds(100, 100, 251, 220);
+		setLocationRelativeTo(null);
+		getContentPane().setLayout(new BorderLayout());
+		contentPanel.setBorder(new EmptyBorder(5, 5, 5, 5));
+		getContentPane().add(contentPanel, BorderLayout.CENTER);
+		contentPanel.setLayout(null);
+		{
+			address = new JTextField();
+			address.setBounds(10, 26, 215, 20);
+			contentPanel.add(address);
+			address.setColumns(10);
+		}
+		{
+			user = new JTextField();
+			user.setBounds(10, 72, 215, 20);
+			contentPanel.add(user);
+			user.setColumns(10);
+		}
+		
+		JLabel lblNewLabel = new JLabel("Server Address");
+		lblNewLabel.setBounds(10, 11, 414, 14);
+		contentPanel.add(lblNewLabel);
+		
+		JLabel lblNewLabel_1 = new JLabel("Username");
+		lblNewLabel_1.setBounds(10, 57, 414, 14);
+		contentPanel.add(lblNewLabel_1);
+		
+		JLabel lblNewLabel_2 = new JLabel("Password");
+		lblNewLabel_2.setBounds(10, 103, 414, 14);
+		contentPanel.add(lblNewLabel_2);
+		
+		pw = new JPasswordField();
+		pw.setBounds(10, 118, 215, 20);
+		contentPanel.add(pw);
+		{
+			JPanel buttonPane = new JPanel();
+			buttonPane.setLayout(new FlowLayout(FlowLayout.RIGHT));
+			getContentPane().add(buttonPane, BorderLayout.SOUTH);
+			{
+				JButton okButton = new JButton("OK");
+				okButton.setActionCommand("OK");
+				okButton.addActionListener(this);
+				buttonPane.add(okButton);
+				getRootPane().setDefaultButton(okButton);
+			}
+			{
+				JButton cancelButton = new JButton("Cancel");
+				cancelButton.setActionCommand("Cancel");
+				cancelButton.addActionListener(this);
+				buttonPane.add(cancelButton);
+			}
+		}
+		setVisible(true);
+	}
+
+	@Override
+	public void actionPerformed(ActionEvent e) {
+		if (e.getActionCommand().equals("OK")) {
+			app.start(address.getText(), 110, user.getText(), new String(pw.getPassword()));
+			dispose();
+		} else if (e.getActionCommand().equals("Cancel")) {
+			System.out.println("Cancel");
+		}
+	}
+}
diff --git a/MyMail.java b/MyMail.java
index e2fc86e..455f3b8 100644
--- a/MyMail.java
+++ b/MyMail.java
@@ -1,13 +1,13 @@
 
 public class MyMail {
 
-	public static final String POP3_SERVER = "pop3.neugebauer.cc";
-
-	public static final int POP3_PORT = 110;
-
-	public static final String POP3_USER = "informatik@neugebauer.cc";
-
-	public static final String POP3_PASS = "ifq2_user1";
+//	public static final String POP3_SERVER = "pop3.neugebauer.cc";
+//
+//	public static final int POP3_PORT = 110;
+//
+//	public static final String POP3_USER = "informatik@neugebauer.cc";
+//
+//	public static final String POP3_PASS = "ifq2_user1";
 
 	public static void main(String[] args) {
 		new MyMail();
@@ -26,19 +26,17 @@ public class MyMail {
 	private String password;
 
 	private String lastError;
+	
+	private LoginGUI loginGUI;
 
 	/**
 	 * Verbindet zu einem lokalen POP3-Server.
 	 */
 	public MyMail() {
-		this(POP3_SERVER, POP3_PORT, POP3_USER, POP3_PASS);
+		loginGUI = new LoginGUI(this);
 	}
 
-	public MyMail(String pIP, String pUser, String pPassword) {
-		this(pIP, 110, pUser, pPassword);
-	}
-
-	public MyMail(String pIP, int pPort, String pUser, String pPassword) {
+	public void start(String pIP, int pPort, String pUser, String pPassword) {
 		ip = pIP;
 		port = pPort;
 		user = pUser;