As your running your client on a remote machine, you have to specify
JNDI properties. The vendor's manual contains the required options.
Concerning JBoss the XML File I mentioned in this thread does this job.
One possibility is to copy this file to your remote machine and
dynamically load by means of a FileInptStream.

    Properties myProps = new Properties();
    Properties sysProps = System.getProperties();

    try {
      myProps.load(new FileInputStream("c://JNDI.properties"));
      sysProps.putAll(myProps);
      System.setProperties(sysProps);
    } catch (Exception ex) {
      ex.printStackTrace();
    }

    try {
      //get naming context
      Context context = new InitialContext();

Of course you have to set up the right URL to the naming provider,
which’s your app server IP.

HTH,
Christian