Open Question: I was wondering if they make those webconnect usb drives for internet?

on laptops for PDA’s or internet tablets?
http://www.pdablast.com/articles/2009/3/2009325-T-Mobile-first-3G.html
For example, you hook that on to a laptop, and you got internet just about anywhere in the world.
So I was wondering, if these are compatible with pocket size pc’s, pda’s, or internet tablets. I ask this becuase I’m just getting into the tech stuff and since i got the nokia n810 with skypeln and skypeout i can make extremely cheap calls to anywhere in the U.S. so i was wondering, if they make something like the thing mentioned above for such and such so basically i can have a working cell phone anywhere i go? i don’t need this to replace my cell, i’m just wondering if someone thought about this before?
the nokia n810 has wifi, so that is how i make those clear and cheap calls, but it feels tied down by the lack of something like the webconnect.

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