Eric, > > For NT Service, That is really great! My question is, whether the jk_nt_service is using the my > JDK1.3 JVM or its own JVM? > The NT service uses the JVM that you configure for it. You configure the JVM by specifying the JAVA_HOME in the wrapper.java_home property. However you can go as far as specifying the exact JVM interpreter executable by setting your own value for the wrapper.javabin property. All these properties are part of wrapper.properties, the nt service configuration file. Gal Shachor