I export the .jar file in folder c:\jboss4.2.2\server\default\lib
You should place the JAR file containing your JPA entity beans in serevr/default/deploy.
Second, the console log info that you posted is the deployment report that appears after deployment is finished. I usually does not provide enough information to diagnose a problem. There should be a stack trace earlier in the console log; find the first exception stack trace and post it.