Hello , could you please help me replacing runonceex to WPI?? So, according to this guide : http://unattended.msfn.org/advanced/methods/wpi.htm , I have to put all the WPI files under X:\WPI, if I want to install apps from CD/DVD , right? Till now I had a runonce cmd file with cmdlines.txt included in %OEM% distribution folder. Now what should I do if I want to replace the normal runonceex with the Windows Post Installer? And again I want to install the applications from Cd/Dvd. Do I need the %OEM% distribution folders? Do I have to add something to winnt.sif??? Thanks Indeed Regards,