There is no specific video explaining this but it is mentioned numerous time throughout 802.1X authentication videos for both wired and wireless. You can definitely perform both user and computer authentication/authorization but they occur as two separate process when you use the native supplicant, machine auth at Windows login page, and user auth once user have entered their credential. Although our videos showWindows 7 but the same should apply to XP SP2/3.

WinXP does machine and user authentication by default while you have option with window 7 or 8 to chose between user authc or machine authc or both.