Download the and save it to a dirctory of your choise. Unzip the file - the new created directory 'jass-jboss-0.3.CR3/' is now called $JASS_HOME. Now set the JBOSS_HOME variable:

               export JBOSS_HOME=$JASS_HOME/

Now you can run the JBoss AS by typing:

               sh  $JASS_HOME/bin/

After startup you can check http://localhost:8080 if jboss is running. The next step is the database setup.