How well can you connect to wireless networks in Manhattan? I talked to someone today who said they have no problem finding wireless networks to connect to while working in Manhattan. Meanwhile, I can't find even one that has any more than one single signal bar, and that will let me connect for more than 1 minute (we work in the same building). I know he's not connecting to any particular one, because neither of us use the one located in our building.

Is my wireless network "antenna" weak? Should I be able to find wifi's better? Is there any way to weaken it? Is there any way to strengthen it?

Thanks in advance!