Java EE (Java Enterprise Edition) General Discussion

I tried a small web service security tutorial given at (http://www.lumidant.com/blog/apache-cxf-tutorial-ws-security-with-spring/) - which worked fine for me. (Posted my query on above URL too). I am trying to understand the client part, which uses org.apache.ws.security.WSPasswordCallback in ClientPasswordCallback() class. if my client is .Net - what changes are required ?

Thanks in advance,
Manisha