Hi Serena,
To wok with
servlets and JSP you need to have a webserver installed on you system.
I have myself thought of taking up SCWCD exam and bought the book "SCWCD Exam Kit" by Hanumant Deshmukh and Jignesh Malvia, which comes with a CD that has a the
Tomcat server installables.
Tomcat is a standalone servlet engine ,supports both the servelet and JSP.
Hope this helps
Reshma