the procedure is as follows:-

1)execute the pgm to get .class file

2)copy .class file  to

if your tomcat  is in d:(assume)

d:\tomcat4.1\webapps\root\web-inf\class folder

if html file is also there then copy  html file to

d:\tomcat4.1\webapps\root folder

3)change the XML file and give the url  name

4)start tomcat server

5)call the servlet from the browser

and type the following in the html page

http://localhost:<port number>/<urlname>