This article describes how to deploy secure wired access with IEEE 802.1X authentication using authenticating switches, wired client computers running Microsoft Windows XP, Windows Server™ 2003, or Windows 2000, and a wired authentication infrastructure consisting of Windows Server 2003 or Windows 2000 Active Directory® directory service domain controllers, certification authorities, and Internet Authentication Service servers.

http://download.microsoft.com/download/b/0/e/b0e2a363-0044-4327-8f17-020818f57234/Wired_depl.doc