Just tried to set up i760 for internet connection. Here seems to be the procedure. Have the PP unlimited talk n text plan w 20MB downloads.

I set it up like this:
Settings
Connections
(click on) Connections
My ISP
(click on) Add a new modem connection
These are my settings
Name: Pageplus
Select a modem: Cellular Line
Number to be dialed:#777
User name: My phone number type like this 5555555555
password: BLANK
Domain: BLANK

It seems to work fine. Let me know if you set yours up differently.