Get from Amazon.com : http://www.amazon.com/gp/product/B000083EAI?tag=hawaiianlegac-20
Cisco-Linksys WUSB12 Wireless-B Compact USB Adapter
Simple portable wireless networking for your notebook or desktop
Works with any USB-equipped PC
Wireless-B 80211b connectivity at 11 Mbps in the 24 GHz radio band
Plug in and youre connected -- no need to open your computer