Thanks for the reply. I'm very interested in how you do your server build. With MDT it seems the standard way is to add the OS to MDT, create a task sequence and create the Lite Touch boot wim/iso. As you specify what image to use when you the task sequence, when u boot the LT wim it knows the UNC path I guess where to pull the OS from, say \\server\deployment$\OS\Win7Ultimate\win7install.wim If you copy the sources directory out of the boot.wim found in the sources directory of a Win7 iso, then you can boot WINPE and then run say setup.exe /wds /wdsdiscover /wdsserver:servername /unattend:unattend.xml. This actually pulls the image off the WDS server natively it seems. If we do it this way then it may be possible to use the WDS dynamic driver provisioning, but I would also like to use task sequences. I guess there is no way to apply a task sequence to this as your not using the builtin MDT deployment facilities as such.