Ok so far I have a Wireless Router(linksys) and a wireless AP (linksys). Well the AP I don't think I need, so it was kinda useless to get. But I want to shoot a wireless signal basically from building to building. It would be a direct shot, so a directional antenna would work. But what I don't understand is what is a "patch antenna"? I was planning on getting a antenna to hook up to the router, and shoot the signal the the house that will be receiving the signal. What kind of antenna do I need to "receive" the signal? Would that be what a patch antenna is for? Or do they make a USB antenna that can just plug directly into the compute rand receive the signal? Thanks in advance.