before U set the working of the JSP as http://localhost:8080/myjsp.jsp
U need to do first setup the Javawebserver2.0 on your machine the installable is readily available on the sun site.
After installing that U proceed to place your jsp file in the public_html folder provided by the web-server.
Then if required U can set the server to a new port, but the default port happens to be 8080.
To access the admin functions use the URL http://localhost:9090/
U can then access using the login/password: admin/admin
To see your JSP page use http://localhost:8080/myjsp.jsp
and your jsp file will be hosted.
Hope this helps U out....