Hi, I have got a servlet to call an EJB. Now I am trying to add a jar file to my servlet by placing it in the WEB-INF\lib dir. When I use a class from my jar file in the servlet I get a NoClassDefFoundError exception. Now if I add my new jar file to jboss/lib/ext dir everything works fine. Do I have to declare my .jar file so that my servlet can pick it up. I just thought I put in the WEB-INF/lib dir and war it up and that should be that. I am using jboss-2.4.4 and tomcat 3.2.3 Any idea's?