The simplest way to connect your Xbox, PS2 or other Ethernet capable devices to your wireless network is with the U.S. Robotics Wireless Gaming Adapter and Ethernet Bridge.
USRobotics Gaming Adapter USB 54Mbps Wless, Wireless, 54 Mbit/s
USRobotics Gaming Adapter USB 54Mbps Wless. Connectivity technology: Wireless. Maximum data transfer rate: 54 Mbit/s. Antenna type: Detachable dipole antenna