Im not to sure, I think on a laptop its built in, as I said your gonner need that link what I posted, thats the only way I can think or if you wanna save cash, go on youtube.com and go search fore homemade wireless, someone will show you how to make one, my friends made thids:
He got a cooking dish/foil and he but his radio signal thing like that link i posted and put foil and the dish behind it and it got 5x better speeds and double the range