stop using Microsoft Office and start using OpenOffice. You have been caught with a pirated version of Office. It might not have been your fault, you bought it in good faith. But, Microsoft will require you to buy a new copy. Download OpenOffice - uninstall Microsoft Office - install OpenOffice and you can do 99% of the things Microsoft Office could do. The 1% OpenOffice can't do you probably never needed and/or never used.