"Do you know where can I find an updated sp1 boot.wim?" On the Windows Server 2008 media. You can actually download a trial here: http://www.microsoft.com/windowsserver2008...l-software.aspx Also, kukucz... I am trying to add a batch file called dell.bat to my winpe 2.1 boot.wim image in WDS. I know that I can do this with imagex and use index 2 but how exactly? Thanks.