jtNick = new JTextField(server.getUsername(), 20);
jtPassword = new JTextField(server.getPassword(), 20);
jtEmail = new JTextField(server.getEmail(), 20);
Component[] c = new Component[] { jtNick, jtPassword, jtEmail };
EnableAction ac
= new EnableAction(Plugin.tr("Customize", 1, 1), c, custom);
jcbCustomizeUser = ac.getCheckBox();
GridBagHelper.add(jpUser, jcbCustomizeUser);
GridBagHelper.addLabel(jpUser, Plugin.tr("Nickname"));
GridBagHelper.add(jpUser, jtNick);