Reading the notes on my installation CD I see that my copy of Windows XP has an integrated installation of SP1. Although the MS notes refer to problems of SP3, the actual problem does seem to revolve around the use of the /Integrate option. The MS notes seem to be saying that the problem doesn't occur with SP1 and SP2. Well, perhaps it does in the nLite world. I can see some complicated work happening here.. but I am running out of ideas. Does any one have experience in building an XP Professional with SP1 integrated and including some SATA drivers? That is all that I am trying to achieve, and yet my key doesn't work!