Help me about orion serlvet

[cgreen]

Hello,i'm a newbie for java and orion i want to make a new servlet on orion application server how to do that ?   I add the lines at web.xml : <servlet>   <servlet-name>FormMail</servlet-name>   <servlet-class>FormMailServlet</servlet-class>  </servlet> and put the FormMailServlet.class to web-inf/classes then i visit: http://../FormMailServlet but get a error   How to do that ? Thanks for any advice.   newbie