Unfortunately, I've had to get a new computer and it's an Acer Windows 10. Does it not have Windows Office? From searches, apparently Windows 10 doesn't come with everything previous systems (95, XP, Windows 7) did. All I can find is a 30 day trial and then purchase window which asks for a 25 number key number which I can't find anywhere in the 5 small pieces of paperwork that came in the box. And the key number looks to be for a 30 day trial. Do I have to buy Office? What else will I have to buy? Any...