I was trying to figure out a solution for XP update problems and I came across a registry hack that furthers XP updates until last month I'm trying it out now and so far it seems real but I thought I'd just pass it on
http://www.zdnet.com/article/registry-hack-enables-continued-updates-for-windows-xp/
http://www.zdnet.com/article/registry-hack-enables-continued-updates-for-windows-xp/