This article describes the Wi-Fi Protected Access 2 (WPA2)/Wireless Provisioning Services 
Information Element (WPS IE) Update. A link to download this update is included. 
You can install this update on a computer that is running Windows XP with Service Pack 2. 
The update supports the additional mandatory security features of the IEEE 802.11i 
standard that are not already included for products that support WPA. Additionally, 
after you install the update, Windows XP will display previously hidden Service Set 
Identifiers (SSIDs) in the Choose A Wireless Network dialog box. This functionality 
makes it easier for you to connect to public Wi-Fi networks to which you have not 
previously connected.