Hi fellaz, I checked out Unattended XP with a lot of OS Versions from M$. Here is what I got: Windows XP 32bit: here beside selecting the installation disc you do not need to do anything Windows Server 2003 Enterprise Edition 32 Bit: installation disc + the license key must be entered manually Windows Server 2003 Enterprise x64 Edition (AMD64): Here there is no difference between an installation with or without a Unattended XP. Here I have to enter everything manually ... Any help appreciated ! many thanks el chico