Sorry if it's a double post but I didn't find what I really want. The thing is... I'm trying to integrate some registry tweaks in my unattended Windows XP PRO instalation. I read a lot of posts telling that I need runonceex.cmd or cmdlines.txt or [guirunonce] on winnt.sif, install on the t12 step (don't know what the hell it is!!!). Anyway, I tried everything but I don't know where to put the files I created. If I use cmdlines.txt I'll need another .cmd file with the scripts, but where to put the files? in i386 or in $OEM%\$$\. Or if I'm use runonceex.cmd where to put the file? Do I need to specify it on winnt.sif? I really don't know. I need the tweaks to be run before login, for the regtweaks in the HKCU to work on the new users as well. I know it's possible but I can't do it without help.