java.security.AccessException with client applet

Hello all, 
I am attempting to create a client Applet using the
HTTP transport and am recieving a security exception
when attempting to establish a connection.  Has anyone
successfully created an JMS client applet?

Source:

props.put(Context.PROVIDER_URL,"http://127.0.0.1:8080/openjms/OpenJMSJndi");

props.put(Context.INITIAL_CONTEXT_FACTORY,
"org.exolab.jms.jndi.http.HttpJndiInitialContextFactory");
      
props.put(JndiConstants.HTTP_CLIENT_URL_PROPERTY,"http://127.0.0.1:8080/openjms/OpenJMSJndi");
        Context context = new InitialContext(props);
        TopicConnectionFactory factory =
(TopicConnectionFactory)context.lookup("JmsTopicConnectionFactory");
        if (factory == null) {
            throw new RuntimeException(
                "Failed to locate connection
factory");
        }
TopicConnection connection = 
                       
factory.createTopicConnection();
        
session = 
                       
connection.createTopicSession(false,
Session.AUTO_ACKNOWLEDGE);
...

Stack trace:
props.put(Context.PROVIDER_URL,"http://127.0.0.1:8080/openjms/OpenJMSJndi");

        props.put(Context.INITIAL_CONTEXT_FACTORY,
"org.exolab.jms.jndi.http.HttpJndiInitialContextFactory");
       
props.put(JndiConstants.HTTP_CLIENT_URL_PROPERTY,"http://127.0.0.1:8080/openjms/OpenJMSJndi");
        Context context = new InitialContext(props);
        TopicConnectionFactory factory =
(TopicConnectionFactory)context.lookup("JmsTopicConnectionFactory");
        if (factory == null) {
            throw new RuntimeException(
                "Failed to locate connection
factory");
        }
        TopicConnection connection = 
                       
factory.createTopicConnection();
        
        session = 
                       
connection.createTopicSession(false,
Session.AUTO_ACKNOWLEDGE);

Thanks,
Matthew M. Dalby