I purchased a Windows 7 Home Premium "Upgrade". I would like to make an ISO file using UtraIso, then remove ei.cfg into the sources 's folder to choose my version ... easy. But how to get rid of the activation problem if I want to do a clean fresh install on a blank HDD. ? Do I need to install and make the reg tweak ? Is there a way to avoid this ? I googled about that, but came up in the dark. Thanks for any help.