first u need jdk1.3 or higher,tomcat4.
2.install tomcat(prefebrly version 5,it is free from apache site)
while installing tomcat give 9999 as port number since the default port 80 or 8080 might be in use by ORACLE(if installed and it's listener was started)
3.set CLASSPATH to point jdk\bin;
4.Place your jsp file at webapps\<your own directory name>\<your JSP file>
eg:c:\program files \apache software foundation\tomcat5\webapps\prasanth\MyFirstJSPFile .jsp
5.Start Tomcat using start->programs
6. type http://localhost:9999/prasanth/MyFirstJSPFile.jsp
at internet explorer
and u will find the result
plz feel free to ask for any further quires..