MS Word malfunctioning

Help please. Suddenly, entirely of its own accord Word is misbehaving. It won't let me delete a word or letter at all and when I use the right click function on spellcheck it repeats the corrected word alongside the wrong one! Despairing MA student.

Go to: You may experience several problems after you install an automatic update for Word 2007 on a Windows Vista-based computer

follow the directions it will correct the problem. I've used this solution twice with good results. To prevent this problem from occuring again, do not leave the Word program running when Vista authomatic updates might happen.
:D