The hibernate.properties file is in jboss-EJB-3.0_Preview_5/lib/ejb3.deployer/META-INF
The instructions for, "Installing EJB 3.0 Preview 5" state:
4. Copy ejb3.deployer from the lib/ directory of the distribution to jboss-4.0.x/server/all/deploy
I over wrote the existing properties file by mistake.
It would be helpful to put a note in the instructions stating, "If you are upgrading,
do not over write jboss-EJB-3.0_Preview_5/lib/ejb3.deployer/META-INF/hibernate.properties."