Problem with JNDI/lookup

[stepec]

Hello,
I´m learning EJB3 form Mastering EJB3 book. I wrote the session bean, deploy it on JBoss, which says me that JNDI name is "CounterBean".

When coding the client there are these lines:

//gaining initial context - is OK
//and now the critical line:

Counter counter = (Counter) ctx.lookup("CounterBean");

this lines causes ClassCastException: org.jnp.interfaces.NamingContext

I don´t understand when it is necessary to use the call with PortableRemoteObject.narrow() and when the lookup returns the instance.

In bean class, there is annotation @Remote(Counter.class) so I suppose it is remote object. I also tried this name: "CounterBean/remote" but I got this exception:
java.lang.NoclassDefFoundError: org/jboss/util/thread/ThreadPool

Can anyone help me with running this simple but also tough example? :)

I would also like to know which jar files I need to add to project (Netbeans) e.g. jbossall-client.jar ...

[stepec]

for those who may get in this situation, the problem solution is to add JAR libraries to project and it works.

I don´t know why this is so messy at JBOSS. Why there is no single JAR, why I have to search the whole JBOSS dir for classes I´m missing? Damn god ...