How do add dll fines windows 7 installation disk what program does that

WAIK, you mount your image and copy/add/overwrite the files

Look in my sig for a video tutorial

You can also use le good old $OEM$ folder witch is way faster than mounting an image.

You just need to create the $oem$ folder into the SOURCE dir of your windows 7 DVD/usb Key.

subfolders are described here : http://technet.microsoft.com/fr-fr/library/dd744265(en-us,WS.10).aspx

Diagg