I was wondering. Can the i386 file in the 32 bit version of XP PRO SP2 be copied into the 64 bit version. I was reading that on some install discs the error missing or corrupt TXTSETUP.SIF file appears and stops the install. I was looking at my copy of XP PRO 64 and noticed it didn't have the TXTSETUP.SIF in the i386 file but my older XP 32 bit dose. I was going to make a slipstream disc with the newer 64 bit version, for my new build to include the drivers for SATA drives because my new machine has no floppy drive. The instructions on how to make one on the MaximumPC site http://www.maximumpc.com/article/How-To--Slipstream-your-XP-installation?page=0%2C2 said I had to alter the TXTSETUP.SIF and as I said, there is no such file in my 64 bit version. Am I asking for disaster swapping the 32 bit i386 file into the 64 bit program ?