Seems a lot of idea borrowing going on

Slipstreaming Windows XP Service Pack 2 and Create Bootable CD
http://www.windows-help.net/WindowsXP/winxp-sp2-bootcd.html

http://www.pcstats.com/articleview.cfm?articleID=1626

http://www.neowin.net/articles.php?action=more&id=94

http://www.petri.co.il/windows_2000_xp_sp_slipstreaming.htm