You won't m8. The usb one's require a certain kind of router to work properly. And what pc have sold you will probably not work with your internet connection.

So, box it all back up, take it back to pc world and get your money back. Then, buy yourself a PCI network card that has a wireless antenna on it, and a usb wireless adaptor for the laptop and then look at eagles thread in the computer discussion on how to get it working