Trying-to-blend said:what site is that you linked to? oh, yeah, it's an ATT site....
What YOU are talking about is a wireless broadband card... COMPLETELY different technology, completely different concept. It may be edge, gprs or whatever else, although today most of em are 3G. Some newer netbooks even come with em pre-installed.
Exactly the reason why his fathers laptop wouldn't have the same address as his desktop at his home.