I am actually having difficulty with this feature of J2EE 1.3 in WLS 7.0. I am trying to load supporting libraries with my ejb application. I have placed a jar file containing straight java classes, common.jar, in the "DOMAIN\applications" directory where my ejb jar is. The Manifest inside the ejb jar is generated by an ant task so should be syntactically ok. It is as follows: Manifest-Version: 1.0 Created-By: Apache Ant 1.5 Class-Path: common.jar If any one has any tips or pointers I would be very grateful. This is a real show stopper for me. Regards, Simon Kelly.