WiFi Protected Access (WPA) Support on Windows XP SP2 - ThinkPad General
WiFi Protected Access (WPA) support, previously only available as a free download, is included in Microsoft Windows XP Service Pack 2. When you upgrade Windows XP SP2, WPA is supported automatically.
However, you may encounter some problems, for example "Cannot connect to the Wireless Network by EAP-TLS", after upgrading to Windows XP SP2. In order to avoid these problems, please verify that ThinkVantage Access Connections for Windows 2000/XP and the Wireless Network Card Drivers are at the latest version.