Disk failure a week after NIS 2012 Installed (not NIS failure). How to re-install on new disk

On Sept 8, I installed NIS 2012 - first of three available for the product.  Just a day ago, I had signs of serious disk failure and so installed a new hard drive in place of the failing one (after removing it from the PC, of course).  How can I re-install NIS (download file was stored on a good, second HD) without using up the second of my allotted three installations? 

 

Right now, my Norton account showed I've used two of my three installations - but actually I just re-installed NIS on the same pc but on the new c:\ drive.