to lostincyberspace2007: i don't wanna upgrade my system, i gonna have a new installtion, but i don't have a cdrom. So there are two ways: A. Install it from within WinXP or command prompt. It should be possible, because the first step of windows setup just copies files and modifies boot.ini. B. Build a Preinstall environment of windows x64. Unfortunately, i've found no PE Builder supports windows x64.