The first three steps show you how to install the Java Virtual Machine
(JVM) provided on your course CD. If you already have a JVM installed,
make sure it is 100% Java compliant or you may run into problems later
on.
Open the file j2re-1_4_0_01-windows.exe on your course CD.
This launches the Java install wizard,
which will guide you through the process of installing Java on your
computer.
Move the Jython-21.class file from the course CD to your computer.
Open a Command Prompt Window
and change directories to the one that contains the Jython-21.class file.