Hi all, i work in an area were wireless wi-fi is offered to the public for free. its actually in a public park in downtown nyc. my problem is if i am not in the park sitting on one of the benches, but rather 200 feet away my comp picks up only a faint signal. i have a built in wireless card, is there anything i can buy to extend that signal. i guess what im trying to say is, what can i do tocatch that signal if im not in the park.