KB917021
Install this update to enhance the Windows XP support for Wi-Fi Protected Access 2 (WPA2) options in Wireless Group Policy (WGP), and to help prevent the Windows wireless client from advertising the wireless networks in its preferred networks list.
KB924867
Install this update to resolve an issue in which after you apply security update KB917422 (MS06-051), programs unexpectedly stop during initialization without providing any error messages.
News source: Microsoft
Download (KB917021): XP (32-bit)
Download (KB924867): XP (32-bit) | XP (64-bit) | 2003 (32-bit) | 2003 (64-bit) | 2003 (Itanium)