-RyanVM for windows update slipstreaming
-Nlite for automating and tweaking
-Driverpacks for drivers
-WPI (Windows Post Installer) for installing enduser software and registry tweaks.
-Nlite for createing / burning the ISO

Installed in that order is important too

MSFN is a great source of general info check it out http://unattended.msfn.org/unattended.xp/

Welcome to DriverPacks Tutorial.

Url to this pages:
http://nade.dk/web/nade/site.nsf/FramesetHP?readform&wmain=files/Slipstreaming_Windows