I'm using Nlite 1.4.9.1 in an attempt to slipstream XP Professional (32 bit), an Intel Raid Driver, and MS SP 2 or 3. The clean install of XP will be on an Asus P6T6 motherboard. Using a laptop running Vista Pro 32, I prepared a slipstream DVD containing the Raid driver and SP 3; then copied the .iso file produced by Nlite to a DVD using Nero in .iso write mode. The target machine successfully performed the XP install up to the point where product key was requested. The Raid was recognized. However, the product key was rejected as invalid. The original XP CD (not DVD) is a legitimate copy of MS XP pro -- in fact it is the original MS CD. I then tried to slipstream SP 1 and raid driver; and finally, Raid driver only. In all cases, the product code was rejected. Finally (after reading of possible incompatibilities of the MS 'integrate' command between Vista and XP), I borrowed a friend's XP 32 (not Pro) machine and repeated the SP2 + Raid Driver slipstream process. Again, the Key error was reported upon install. Can anyone offer guidance ? Is it necessary to use CD media to receive the slipstreamed files if the original XP disc is a CD ? I don't want to purchase Vista, as I'm awaiting Win 7. Thanks, Ross Wilson