I'm testing a simple app that invokes a servlet through a html page. I deployed the app without problems and when I invoke the html it works fine but I when I try to access the servlet I get always an error. I don't know if I'm copying the classes in the correct place ( i think so) but i'm not sure. The servlets are in WEB-INF/classes but I can't connect. I invoke the servlet with: <form method = get action="AdderAlias"> The definition of my servlet is: <servlet> <servlet-name>TheAdder</servlet-name> <display-name>TheAdder</display-name> <servlet-class>AdderServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>TheAdder</servlet-name> <url-pattern>AdderAlias</url-pattern> </servlet-mapping> With this I get an navigator error "HTTP 404 - file not found If I change to <url-pattern>/AdderAlias</url-pattern> i get a server error: 500 Internal Server Error java.lang.NoClassDefFoundError: Adder at AdderServlet.doGet(AdderServlet.java:49) at javax.servlet.http.HttpServlet.service(HttpServlet.java) at javax.servlet.http.HttpServlet.service(HttpServlet.java) at javax.servlet.http.HttpServlet.service(HttpServlet.java) at com.evermind.server.http.de.o6(JAX) at com.evermind.server.http.de.forward(JAX) at com.evermind.server.http.dl.pc(JAX, Compiled Code) at com.evermind.server.http.dl.pb(JAX, Compiled Code) at com.evermind.util.e.run(JAX, Compiled Code) I tried to set the tags: servlet-webdir="/classes/" <classpath path="./path/to/classes/" /> in orion-web.xml but with no success. Could someone mail me a short definition of how he does success implementing a servlet !!! THANK YOU VERY MUCH. ------------------------------------------------------------- David Sierra Fern ndez Ingeniero Tecnico de Telecomunicaci¢n AULA RETECAL (CEDETEL) Universidad de Valladolid Campus Miguel Delibes E-Mail: [EMAIL PROTECTED] 47011 Valladolid (SPAIN) -------------------------------------------------------------- -- Sierr@ --