As i stated in another post, my aunt just got a new intel iMac. She is terribly frustrated with it because the internet is sooo slow.. Her wireless signal is slow, but for some reason most of the time airport seems to have a decent connection.. I need to help her out before she throws the computer out the window.. She ahs a linksys wireless b router. My question is, if i build one of those directional cantenna things, would it improve her speed? Her router has two antennas on it, so if i take one off, and attatch the cantenna to it, and point it in the direction of the imac, will it work? Can these cantennas work both ways, receiving the signal, and sending it out? I would assume both right? Any info would be great, because shes trying to spend as little as possible, and knows absolutely nothing about computers. Im going to make this for her it hink..