Here are the links to the products used.
XBEE wifi and development kit OEM Wi-Fi Module with Fully Integrated Support for Digi Remote Manager | Digi International
arduino Wireless Proto Shield http://arduino.cc/en/Main/ArduinoWirelessProtoShield
Arduino UNO Rev 3. http://arduino.cc/en/Main/ArduinoBoardUno
Laptop with windows XP sp3.
hope this helps.