difficulty in running servlets

[Rasika]

Hello, I have installed TOMCAT with Apache. I followed your user guide and then tomcat faqs to install tomcat. Now I am able to run .jsp files using both tomcat as well as Apache. I can also run sample servlet provided alongwith examples. But I cannot run my own servlet. I have stored itin webapps/root/web-inf/classes directory. I still don't understand which files need to be configured in order to run my servlets?   I have added following block to web.xml file <servlet>       <servlet-name>hi</servlet-name>       <servlet-class>hi</servlet-class>     </servlet>   where "hi" is the name of my servlet file. But when I try to run it through browser giving command http://localhost:8040//hi where 8040 is apache port(which I have changed ) it gives me 404 error.   Can you please help me in configuring files so as to run my own servlets?   Thanks, Rasikaj