New
#11
What the OP wants to do is not illegal if he/she has a valid license for OS and programs for the number of computer they plan on re-imaging to.
If that is true then the only easy way to do this is to use a program like Acronis True image using there Universal Restore feature. It wipes out the hardware layer of the registry so that at first boot on the image on different hardware the OS detects the new hardware and installs drivers or the user installs them manually.
Remember that when you ASSUME you make a A-- out of U and ME.
And if he does do this and does not have the proper licenses then he will get caught and deactivated by most of the software installed including the OS.