Turn off Read Mode
Problem: When you double-click on a DOC or DOCX file attached to an email message in Outlook, Word pops up in Read Mode (also called, confusingly, Reading View). As Tristan Davis said on the Office Next blog, it “essentially turns your Word documents into an interactive digital magazine.” Pardon my vituperation, but Read Mode is just a pain in the pinky if you don’t use touch.
Solution: In Word, click File, Options, and on the left make sure General is showing. Near the bottom, uncheck the box that says Open E-mail Attachments and Other Uneditable Files in Reading View. Restart Word.