Does anyone know how many times you can activate office without having to call MS? Now I don't mean on differnet machines! My concern is that if I format my harddrive, and make no other changes (i.e. Hardware), so its virtually identical to what it was when I first activated, will I have to call MS?

Also I know that with Windows XP you can backup your activation, is this backup possible with office 2003?

By the way I have activated it, I think 3 times already, on the same machine of course.