Servlets and Enterprise Server

Is it possible to un Servlets/JSP on enterprise server? Our system administrator has installed enterprise server, but my HelloWorld servlet fails because it cant find GenericServlet. I can't find servlet.jar or any WEB-INF directories either.

Of course you can run Servlets/JSP, you just need a servlet container. If you have it already installed and your helloworld does not find GenericServlet, then you have a classpath/configuration problem. Or maybe you don't have the servlet.jar library.
Make sure you have a current JDK in your classpath and check the jar in WEB-INF/lib directory.

Thanks Juanjo,
When you say I need a servlet container - I take it you mean something like Tomcat or JRun? I thought enterprise server was a sevlet container.

Well, when I said a servlet container I didnt meant any particular server.
But an Enterprise Server, is generally taken as a webserver including not just a servlet container(like Tomcat) but also supporting Enterprise Java Beans(EJB) implementation.
So if you are using a Enterprise Server you can run Servlets/JSP, but maybe Tomcat is enough for your needs.