What I have done which works is to save a Windows 7 Backup Image of the installation which you wish to copy, then reimage it onto the target machine.
When it starts up, it will change out all of the drivers
in quite a show punctuated by requests for restart.
Then go to the Computer>Activation link and Change Product Key, reinstall your Product key. It will likely require you to make a robo call to MS to trade numbers which deactivate the key on the old hardware installation and activate it on the new one.
In the rare event you need to speak with an agent, tell them that you reinstalled it to your netbook, with no mention of copying or cloning because I've found MS is allergic to these terms.
Now run a repair install (upgrade over itself) to remove the key from your original Premium which will give you 30 days to Upgrade to Pro. Upgrade only needs to see any OS to accept key,
Or use the popular workaround to install Pro Upgrade to deleted Premium's formatted HD: http://community.winsupersite.com/bl...he-answer.aspx