Installing EJB 3.0
Download JBoss 4.0.1RC1 or higher.
Download EJB 3.0 Preview II or higher.
Copy ejb3.deployer and ejb3-interceptors-aop.xml from the lib/ directory of the distribution to jboss-4.0.1/server/all/deploy
Start jboss up with the all configuration run.sh -c all on unix or run.bat -c all if you are on windows