Tomcat and Orion don't work??!!

[Ng Ka To]

Hi, I want to run the servlet on  tomcat and  EJB on Orion. I have put the application-client.xml int the ./META-INF folder However, when the servlet get the JNDI from the Orion, the tomcat throws an exception like this: "main thread" "javax.naming.parsers.FactoryConfigurationError" errors. What's kind of problem?? Does anyone have the experience to use tomcat with orion. Thanks!! Kato