Ryan's integrator is designed specifically to add/update/integrate/slipstream the base Windows XP CD nLite is originally designed to tweak and remove unwanted XP components. The confusing part is that nLite can also add/update/integrate/slipstream; however, if you are using RyanVM's update pack, it is recomeded to use the integrator, as RyanVM and the community can assist you in trouble shooting your disk, assuming you have not tweaked and/or removed unwanted XP components with nLite.