The JBoss jBPM starter kit contains everything needed to execute JBoss jBPM, with the exception of a JDK. The JBoss Application Server in the JBoss jBPM starter kit requires J2SE 1.4 or a more recent version.
After you have downloaded the starter kit, unzip it to a directory of your choosing. Once you have unzipped the starter kit, you will have a directory structure similar to the following:
o jbpm: Contains the source code for the JBoss