Hello, All the files i put in my "C:\installXP" folder are \i386 that i found somewhere in C:\WINDOWS\ServicePackFiles. This folder is dated 2 Nov 2008, the day i installed SP3 ... This i386 folder is around 400 Mo, so i thought it was the one i needed (see i386source.jpg). My PC is a fujitsu siemens AMILO 1425 and I don't have any windows CD. That's why i want to slipstream my windows installation and burn it on a CD. I followed the steps of this site (in french) : http://www.commentcamarche.net/faq/sujet-5...c-grande-marque It is said that i must copy \i386 files in a "C:\installXP" directory + autorun.inf + win51ic + dotnetfx folder (.NET framework) + all files oembios.* that i can find on my hard drive + valueadd folder if any And That's it !!! It's what i've done (see installXP.jpg). I know that's light too ... Might miss something as you both told me. Is there an easier way to do what i want ? Thanks again for your answers.