I have the vision plan for my i500, with which I plug the usb cable into my Mac, the samsung CDMA network contigurationis selected and I connect, #777, and I'm on the internet.

So, I gather from these posts that it ain't so simple on a 755P. If I get a 755P:
1) does the Mac OS 10.4.9 contain a driver for the 755P?
2) does the #777 phone number work?
3) do I have to get a data plan. I only use this once a month or even less.

why do you need (if you do), pdanet or usbmodem?

Thanks in advance.