Making a GPRS connection to a Nokia 3650 cell phone go over Bluetooth
                          in Debian GNU/Linux

Just replace the ":" in the filenames with "/" and there you have your 
directory structure.

rfcomm.conf:
  * change ff:ff:...:ff to your BDAddr (bluetooth "MAC" address)
  * don't forget to restart the rfcomm daemon:
    /etc/init.d/bluez-utils restart

interfaces:
  * merge this into your interfaces file