EJB - java.lang.ClassCastException - newbie

[gunzip]

I develop the ejb and it deploys ok
on it there is
Bean class
Remote class
Home class
ejb-jar.xml
jboss.xml(all in an JAR)
servlet(in an WAR)
(it doesnt have manifests nor jndi.properties, because i dont know if they are necessary or how to make them)then I pack everything in an EAR, it deploys ok, the servelet works

but the problem is that when it tries to

javax.naming.InitialContext jndiContext = new javax.naming.InitialContext();
System.out.println("Got context");
java.lang.Object reference = jndiContext.lookup("helloejb/HelloEJB");
System.out.println("Got reference");
HelloHome helloejbhome;
helloejbhome = (HelloHome) javax.rmi.PortableRemoteObject.narrow(reference, org.jboss.helloejb.HelloHome.class);

it gives me an error on the last line(i receive the last two got messages but then error)
java.lang.ClassCastException
I'm made the ant set lib with jbossall-client.jar

Im confused about EJB and Servlet integration, so I've put them ALL on the same folder and package, but still dont work

my ejb-jar.xml
<ejb-jar>
JBoss Demo Application
<display-name>EJB HelloWorld Demo</display-name>
-
<enterprise-beans>
-
<ejb-name>HelloEJB</ejb-name>
org.jboss.dww.HelloHome
org.jboss.helloejb.HelloRemote
<ejb-class>org.jboss.helloejb.HelloBean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Bean</transaction-type>

</enterprise-beans>
</ejb-jar>

jboss.xml

<enterprise-beans>

<ejb-name>HelloEJB</ejb-name>
<jndi-name>helloejb/HelloEJB</jndi-name>

</enterprise-beans>

I'm using red hat 9, Jedit

Anyone

[gunzip]

I'm with JBoss 3.2.3 Java 1.4.2
I've heard its necessary to create CLIENT jar file with the home interface and
put in the lib on ant
I'm not sure how to do it, coudl someone give me an 'idiots' guide?
I tried to generate a jar via ant using the same tags as in the EJB but they didnt generate anything, I tried jar -c filename, but didnt work

[gunzip]

NOBODY KNOWS?

[juha]

This class name from your descriptior

org.jboss.dww.HelloHome

Does not match the class name your using in your code.

[gunzip]

Yes, that was the problem
thanks.
If it is not asking too much, coudl you give me an example
of how a web site using EJB(jar) and Hibernate(sar) and WAR should be structured
so ANT would not keep adding useless class to all their directories
I'm not sure what they need in terms of classes and mapping, just in terms of XMLs