W7 Individual Licensing Activation Script

Currently we have individual licensing on our workstations as we buy them as needed. In most cases before deployment we reformat re-install and install our companies basic applications. I would like to streamline this more and was wondering if anyone has a script i could use with a disc image to look for the workstations assigned activation code. Instead of installing every application one-by-one. I found this link but unfamiliar with this scripting i was not sure it would work for individual licensing.

http://smallbusiness.chron.com/activate-windows-7-through-powershell-28450.html