I saw this in the latest issue of LangaList.
A person who goes by the screen name BoldFortune has posted a very lengthy message to a forum that he runs that details steps on how to reduce the size of Windows XP. He claims it took him 4 years to gather this all together. Check it out at http://hollow-refuge.net/Bold/viewtopic.php?t=229.
Thank you very much for the kind mention of my guide. I thought I would update the link to the guide for you.
http://www.bold-fortune.com/forums/index.php?showtopic=229