Windows XP Patch

From Microsoft:

This update provides support for Wireless Protected Access, a new standards-based wireless security solution developed by the Wi-Fi Alliance. WPA is intended to replace the existing Wired Equivalent Privacy (WEP) standard, offering much more robust methods of encryption and authentication and resulting in a new level of protection for customers taking advantage of the wireless features of Windows XP. For more information about this update, read Knowledge Base Article 815485.