AddDrivers is a script to install drivers ( I thought there were drivers too....) I've never installed drivers till now .... and now I see that a driver is a complicated stuff. where an .inf file gives a lot of instructions ,also about step where Register is updated. (as in eSAT-Si13132 example ). Now my driver NIC for Intel(R)82566DC-2 Gigabit Network Connection that is in c:\windows\system32\drivers\e1e6032.sys can be downloaded from HP as sp35017.exe . I want install it in VistaPE but as you see it is not in the form required by Mustang script.. Or am I that don't understand ? Many thanks.