EJB Support

Hi All,
I downloaded build #661(eap) today and doing some testing. I am trying to enable EJB support and I repeatedly getting "Class javax.ejb.CreateException not found , please add J2EE.jar "error inspite of adding weblogic.jar in Project Classpath,Libraries. Could some one tell me what's going wrong with my setting. I installed Jdk1.4.1 and wls7.
Your help is much appreciated.

Sanjeev Hiremath