Installing a Dial Up Networking (DUN) conection programatically

Greetings
I have created a Pocket PC app that will connect to a BT phone and
dial a DUN connection. in deploying this to other PDAs I need to be
able to install a DUN connection including the DUN name, phone number
etc.

Does anybody know of how the DUN info is stored?
Registry Perhaps?
I am working with the widcomm stack

Thanks