You can find information to configure GateIn in the following pages:
The complete GateIn documentation is in this page:
If you need other information or if you have problems during the configuration you can use the GateIn Forum.
Hope this helps.
Thanks Luicidi for the inputs.
I know those links already in the Jboss site. They are not new, but that information is not enough to configure some stuff like Microsoft AD for authentication etc.,
I have opened a new thread for that and appreciate if you can have a look and point me the right way