I recently did a reformat for my computer because it had a virus (which NIS did remove) but before removal the virus did some damage. I would get random errors, my apps would be suddenly gone and I would have trouble turning off my computer. I had NIS 2010 installed on my current PC and have it installed on my other PC. But I sent the CD and Product Key to my cousin, who used the remaining install. My question is, is there a way to re-install NIS 2010 without having to purchase it again?