It's possible to connect using a regular "Dial-up" connection that will use you minutes, the same way a regular call would. It's very practical to sync with avantgo or check/send emails.

http://www.ubergizmo.com/
OR
http://www.ubergizmo.com/2004/08/tip...unlimited.html

I got frustrated with Cingular's pricing... no way I'm going to pay $40 for unlimited internet. Granted, it's unlimited only N&WE, but, hey, I'm @ work the rest of the time