Stupid short titles... lol. Windows XP Upgrade CD "Setup cannot find a previous version of Windows installed on your computer" Error message... so... my friend has a windows XP upgrade CD. we argue for about 30 minutes that you cannot turn a Upgrade CD into an completly unattended CD.. the error that we get when we try to install is: now, i've done some research in this and all i have found is that if you take out the CD at this message, insert a retail CD of an older OS (which he has, windows ME), then hit enter and put back in the Upgrade CD it will install XP without the need of having another OS preinstalled. not sure how winnt.sif and all those files are handled yet thats tomarrows goal lol. so... my main question is... Can an Upgrade Windows XP CD be turned into Unattended? without the CD swap... thats gonna be very annoying for him having to carry around 2 CDs to restore.. thanks Bi0haZarD