Class conflicts with third-party libraries on j2ee engine

Hi,

I am deploying a repository manager into EP. In my repository I referenced javax.xml.namespace.QName, which conflicts with the one declared in jaxrpc.jar in j2ee/cluster/server0/bin/ext/webservices_lib.

I am not very clear about how NW j2ee engine loads classes, but it seems that it loads classes in j2ee/cluster/server0/bin/ext/webservices_lib first. As a result, I got a class confliction error:

java.lang.NoSuchMethodError: javax.xml.namespace.QName.<init>(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V

If I remove QName.class from the jar in webservices_lib, it works fine, but this not the right way. I have read Note 990854, but not clear about how to do. Could anyone give any help?

Thanks,

Ray