Hi everybody, Thanks for your help !!! - i used nLite and DP's and it's worked fine I tried my ISO with virtual pc and XP 's installed BUT, now i have another problem (wich i hadn't think) ... how could i remove entierely VISTA from my HD ? I would specify that my computer was bough with "VISTA inside" and i haven't the vista CD. I prefer remove entierly vista to gain space on my HD, because it's one of the problems i have with vista (the size and the "weight" of this OS). One time again i hope you clearly understand my post , if you didn't tell me where and i tried to explain this