This is a link from windows download center. It is search results
for ALL XP updates with the MOST RECENT starting first.
Now I use this to directly download updates to my pc because I
dont like using windows update and I have dialup.
This is slow compared to checking all the updates you want and
installing directly from Microsoft at once but I prefer this method
because I can read/save the tech bulletins for my updates while
Im dl'ing my sec/crit etc updates. Hope this helps. Most of the
updates may require a validation process but should be problem
Also, it is a shame that autopatcher is no longer being updated but
it is a great program that installs all the needed updates via one program-like a service pack. I loved it for W2K. The XP version is
pretty close to up to date with the latest updates from microsoft-
check it out if you wish and there forums are helpful.