In case anyone else is reading this same book, I managed to get this working in the end. I found a very useful article here: http://www.adam-bien.com/roller/abien/entry/ejb_3_portability_issue_why When I changed the JNDI lookup to use the string "SimpleSessionBean/remote". I finally got the JNDI lookup to resolve. Then I came across another issue Exception in thread "main" java.lang.NoClassDefFoundError: org/jboss/security/SecurityAssociation I tracked this down to yet another missing jar in my classpath client/jbosssx-client.jar Hope this helps anyone else reading same material :) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4134544#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...