Networking Products we find useful:
Mobile Broadband Cards
Our office got on board with Sprint's mobile broadband service as soon is it came online last year. I had been waiting on that day to come for a long time! Being truely free with my laptop and not having to hunt down a wi-fi hotspot was truely a highlight in my life.
I've personally used the 595U Air Card by Sierra Wireless, and the PX-500 manufactured by Pantech. One was USB and the other was PCI and I could not tell the difference, as both were EVDO.
Sprint's network is pretty reliable in my area. I was able to use both card's out on the lake!