You need a Windows PE license for that. You could buy the Avast BartCD, but it is a bit expansive for use normal users. The only “free” Builder of a PE cd is not avaible anymore( http://www.nu2.nu/pebuilder ). A other way was to create one for Linux. There are several livecds avaible( http://www.knoppix.net/ ), but you have to include a scanner for your own and you only have NFTS read access no write access.