All of my Word files in My Documents are opening with a message from Adobe Reader that Adobe can't open them. I have to go back to the file, right click on it and ask it to open with Word which it will then do. If I leave that file and go back to it I have to go through the same process. Somehow I did something that caused this to start and I can't find the way to undo it. Help would be much appr`eciated.