Sorry still not what I want, every computer has is own serial number sticking on the front, I (like I did with 98, NT4 & ME) want to clone a computer, then put this clone (done with symantec ghost) on all the other Pc's... but I wnat them to behave like they never received a serial number. I have to install One PC first (printers, some terminal software stuff like that. Afterwards, i would like to *reset* XP so that the next time the user boot's the PC the first thing he as to do, is to enter de serial number.... After this reset, this is the point where I would make the *clone* and do the rolout on all the other systems GreetZ Alain.