Well, if you have MS Windows XP Pro SP2 along with IE7, WMP11, Windows Live Messenger 8.1 installed, then, if you install all of the (currently 90) patches listed in the first post in this thread, your computer will be fully patched according to what Microsoft serves out in Windows Updates. If you do not have all of the add-ons listed (IE7, WMP11, Windows Live Messenger 8.1), you may need other patches as well. Is this for building an automated install CD or patching an existing installation? If the later (which it kinda sounds like), you'll likely want to use Windows Update instead.