Connecting to GPRS using a Nokia Phone is not too tough in Ubuntu Gutsy. This is because the default udev rules does install the required drivers and map most of the Nokia devices to /dev/ttyACM0. But it can become tough if you need to retain the resolv.conf or making the pppd to add a default route to the connected device. We will see how it was done properly in the Saturn Labs.
This will be a small guide on how to connect to internet using a GPRS over a Bluetooth enabled Phone.
1) First you need to install the necessary tools:
Make sure you are running the latest versions of firmware for the Treo 650. I happen to have an unlocked edition so this is very easy to fix from PalmOne.