I'd like to thank EmRoD for pointing out the %configsetroot% (i have been searching for a variable wich points to the location of the answer file for a long time) , and regarding the drivers in a ConfigurationSet i also found out something very cool , it seems that the setup process searches recursively in the driver path. If your drivers are in "%configsetroot%\Drivers\nvidia" , "%configsetroot%\Drivers\audigy" , etc... , you only need to insert "%configsetroot%\Drivers" into the answer file. I find this very useful , no need to change the answer file when you add/remove drivers PS. this works in both windowsPE and offlineServicing.