Hi All, I've installed Windows 7 by USB and used MSDN keys to activate. Then I backed up 2 files pkeyconfig.xrm-ms & tokens.dat. Now I'd make a DVD with those 2 files & Key added in. So that I can re-install Windows sometime later and It automatically installs those 2 files & Key and activate offline. I create folders $OEM$\$$\system32\OEM with pkeyconfig.xrm-ms & tokens.dat in OEM and put them in sources folder. My question is that What command lines to delete them, then Copy backup files in same directory ?? I'm appreciated for all your help. Thanks in advance.