Aquetas is right, its not worth it. With Cingular on my 8700c, I am able to connect with no problems using my Dell Latitude D610(company issued). From there I've had success sharing the USB internet connection over wireless, thus being able to use it on my Mac.

I contacted PocketMac a bit ago and the assured me a modem driver would be included in a later release of their software...

Until then, all you MacBook (pro) users should have no problem running parallels(windows within 10.4), and then sharing the internet connection (bridge it with a virtual network port and use a proxy). As of right now this is our only option.