Unless you want to go through the trouble of programming a microcontroller to do the signal processing and conversions to usb, and then write your own device driver for the thing, and then a whole slew of other shit which most companies take months to complete, then you probably won't be able to get it done through USB.
However, there is the possibility that you can use the internal WiFi connector in your laptop. You will have to open it up, of course, and then see how that part works. I believe it is typical for a laptop to have antennae threaded through the case, and they are attached to the board with a simple MMCX connector. Since that site gives you directions in how to make a N-to-MMCX pigtail connector, you should be fine following those directions. As an aside, you can get a lot of the components you need for good prices as the following suppliers:
Mouser,
Digikey, and
Jameco.
One thing you should note is that while the cantenna will get a pretty high gain for signals, signal degradation through the wire is pretty high, so the shorter a pigtail you use, the better a signal you will get.
Jam it back in, in the dark.
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