Sounds like you got this wireless thing down. Does using a cell phone (e.g., My Verizon/Motorola phone acts as a modem when I hook it to my laptop using a USB/Motorola cable.) require a special card and port, other than a standard usb?
Nope. I've used Samsung and Motorola with nothing more that a $10 cable (proprietary) I got from eBay.
Plug and Play. When the cable is plugged in, WinXP recognizes it and sets it up as a modem. When you open Juno or whatever ISP software you are using, you select that modem and then setup a local number to dial and off you go.
One caveat. I would not use this method for extensive browsing. Because the modem speed at best is only 14,400 kpbs. OK for email but web pages load really slow. You could use something like the "Off By One" browser (Google it) to eliminate a lot of the graphics and speed things up...though I've never tried it. I load Firefox after the modem connection hooks up.