I paid as little as 20 bucks for one. Adding wifi to your other PC should cost that much or more. Why not just get the wifi router?
What is the easiest, cheapiest way to make my home pc wireless to the internet. There is one computer that is already connected to the router. Is there any way I could just buy something to make my other pc (which is in the other room) wireless so that I can connect to the internet. HELP PLEASE