For the record, and just so there's no misunderstanding, you have some other choices if you want to use Wi-Fi besides buying a new laptop with Intel Centrino mobile technology. First, there are wireless Windows laptops that don't use Centrino, and you can add a Wi-Fi card to almost any existing laptop. Second, laptops from Apple also use Wi-Fi. (In the Apple universe, Wi-Fi is called Airport and Airport Extreme.) Finally, it is even possible to use Wi-Fi with a laptop using Intel Centrino mobile technology running Linux (rather than Windows), although this is probably more appropriate for advanced users.
Of course, Wi-Fi also works well with desktop computers.
But from the viewpoint of this book, ...