Your DII client is not aware of the jaxrpc-mapping information
ServiceFactory factory = ServiceFactory.newInstance();
Service service = factory.createService(url, qname);
Have a look at
http://wiki.jboss.org/wiki/Wiki.jsp?page=WSClientDII or better use the WS4EE client model instead of DII.
I spent some time at pindar last year, training some of your guys. Have we met?