reading through the whole nLite Thread atm, stressing found "-winnt.sif is only copied if there is none, it will not overwrite yours It's needed because you can get some unsigned drivers questions if there is no line to ignore driver signature,..." im at work atm, when im back home i will give that a try, not sure if there was any winnt.sif on my xpcd. @bucketbuster's thank you, already read that thread but didnt noticed yet what modifype was for. finally got it, nice tool does anybody have more informations about modifype, how it works ? tried google but doesnt give much informations at all, just that it manipulate the header of pe executables. edit: "A PE utility that can add/delete physical/virtual space in any PE file. It can also realign your sections to make the files smaller. Source code included. Written in NASM." but how does it get winxp to think the file has signature in this way? the question should be now what actually a driver signature is, i always thought its some special header in a file or something?