I'm on an iBook G4 using Word 2004 for Mac. While traveling last week, somehow some setting got changed so I can't type in a Word document. With existing documents I can cut and paste, but not add any new text, and can't do anything in new documents. I can type into the Help dialogue boxes, but so far haven't found anything addressing the problem. Obviously, I can type online as I'm doing so now from the same computer, and I can use Excel just fine, so it doesn't appear to be anything to do with the keyboard. Any ideas on what settings I need to re-set so I can use it again?

Thanks