Hey John,
How's it going?
I used my cell phone as a modem (Motorola Razor) when I was at Ft. Hood. It worked pretty good.
I'm sure you're talking about an "air card" or whatever it's called.
If you have a good cell signal it should be alright. I know Cingular put up some new towers on Hwy 149 in 2005, there's one behind Fred's at Hilltop, but I'm not sure what's out your way.
I guess I just wanted to say hello! I'm still in the bad place but will be home this summer...take care!