I had a copy of Win Office 2007 that I got from a friend that I have used for awhile. After one of the MS updates, a notice appears that the Office software is not genuine. I purchased a legal copy of Win Office 2007 but when I try to install it the install says the program on my computer is more recent than the one I am trying to install. The installation quits. I want to install the legal copy but I don't want to loss all my existing data. How can I install it?