This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
Are you using the correct version of JBoss jar files in your client classpath? You should be placing the exact same jbossall-client.jar file from the %JBOSS_HOME%/client folder, in the client classpath.