Thank you, i already know about those. I probably didn't ask my question well enough because the answers you gave me are not the one i'm looking for. I'll try to explain a little more clearly what i'm looking for. I made a tech cd with all the utilities i use to diagnose/clean/repair computers. This is a normal cd ,made with Autoplay Media Studio that boots in windows. From the menu i made, i can install antivirus, anti-spywares, etc... like normal applications. I sometimes had problems installing some applications because the system was too corrupted. There's my need. I'd like to create a cd-rom with an autorun.inf that could boot into windows. Don't misunderstand, i don't need a bootable cd to SEE windows, like bart's PE or some Live Linux cd. I already have these. Do you follow my point ? Instead of installing Kaspersky antivirus on the user's computer, i would have it installed on a cd-rom. Somehow, it would be like running windows from a cd, on windows. I hope it's more clear now.. I know that this request can be misunderstand easily, but i'm not looking after the easy answer (WinPE, Bart's PE, Knopix). I didn't read any thread about such cd or never heard anything similar. Have you any idea ?