Extend Your NetworkCool.
If you already have a wireless network in your home and would like to extend its range, AirPort Express is your answer. Suppose you want to connect to the Internet with your PowerBook in an area that lies beyond the 150-foot range of your AirPort Express or AirPort Extreme Base Station. You can use AirPort Express as a wireless bridge to extend the range of your primary base station.(5)
There’s no need for extra wires or cables — serving as a bridge, AirPort Express doesn’t have to be physically connected to your primary base station or to your DSL or cable modem. Simply place AirPort Express within the range of your primary base station and near the area where you’d like to enjoy your wireless connection.
4. AirPort Extreme and AirPort Express can extend the range only of an AirPort Extreme or AirPort Express wireless network.>D'oh!