how to connect to your own message bus

[Wang Jun]

Hi all,
 I have a few application modules. each run as a separate 
application. current session bus is used for communication
among modules. My question is:
 1, is it possible to have a separate message bus that is only
used by the few modules.(other than SYSTEM_BUS, SESSION_BUS)
 2. how to start a message bus of your own and specify connection
in an application.
DBusConnection * 	dbus_connection_open (const char *address, DBusError
*error)
any sample about the address parameter.

Regards,
Wang Jun