The bundled version is JBossAS + Portal with the Portal configured to use Hypersonic.
If you have JBossAS already, here is what to do to add the Portal and Hypersonic support (assuming Portal 2.6.5):
1) Download and unzip the Portal binary
2) Copy jboss-portal-2.6.5.GA/jboss-portal.sar to jboss_home/server/xxx/deploy (where xxx is the config name, such as "default")
3) Copy the jboss-portal-2.6.5.GA/setup/portal-hsqldb-ds.xml to jboss_home/server/xxx/deploy.
You JBossAS setup know is configured just like the bundle.
Thanks! I'll try that.