I bought NIS 2009 for 3 PC’s in the box several months ago at a retailer. After installation there was trouble with it starting up. Symantec support provided me with an updated NIS 2009 version that works fine. Now I want to install NIS 2009 on another PC. Can I copy the new version I was given by Symantec support via download? It’s in my program files folder. Or do I need to install the original NIS 2009from the box which had problems? My PC uses an AMD Athlon 64 processor which may have been the issue. The PC I want to install the NIS 2009 onto now also uses an AMD Athlon 64 processor. Thanks, Frank.