Not sure if this is the right place to ask, but I might as well. Anyone know the best place online to buy Airport/802.11 antennas? I live in the Valley (LA) and from the top of my apartment building I can see EVERYWHERE. I really want to sit up there one afternoon with a laptop and directional antenna (preferably a parabolic [looks like a satellite dish]) and find fast open wireless access. I can see the Universal Studios building from up there, I gotta wonder if they have some open access points.

Any advice? I am an engineering idiot, so don't suggest building one. But you can build one and join me on the roof if you want :-)