Bluetooth DUN and PPP

Hi,

I have a query about the DUN and PPP and hope that someone can point me in the right direction to proceed on. I am programming a console application in C that will be used on Windows platform and maybe other platforms in future. The application will be used by a laptop/PC to connect to the Internet by using the DUN profile of a bluetooth capable mobile phone.

I have managed to connect to the mobile phone and make a call to a normal phone number using the ATcommands. But I understand that to connect to the Internet thru the GPRS, I also have to implement the Point to Point Protocol. If that is so, how can I go about it? Please do correct me if my understanding is wrong.

Any pointers to set me in the right direction is greatly appreciated.

Thanks and regards,
Loh