Hello I'm in the business of selling used computers. I have bought 50 of the same model desktops but they came with no operating system installed so I have set one up as an image to ghost the others Now the problem with that is all of the computers will have the same username Is there anyway after I've finished setting up the image computer I can delete the username so when I ghost the others it will give me that add a username screen the same as one as when first installing windows xp ??