I am not the average home user in any way, shape, or form and that useless GDI scan tool MS offers left me confused, uneasy, and angry. This letter captures my thoughts exactly:
Your “GDI Scanning Tool” is worse than useless. Run it, and it tells you that you "may be vulnerable", and directs you to Windows Update and Office Update. Go to Windows Update and update everything you can find. Go to Office Update and do the same. Run the scanner again, and it tells you that you "may be vulnerable", and directs you to Windows Update and Office Update. Lather, rinse, repeat.
Read the rest of the letter here.