I bought the NIS 2010 for 3 computers and only used it for one. I had to reinstall windows on my laptop and when I did it deleted my NIS. I can’t figure out how to put it back on my computer. Even though it’s the same computer if I have to use it as my second one that’s fine but I can’t figure out how to put it back on. I had to get a trial version of NIS 2011 and it is now expired.