This morning I tried to open a document that I've accessed many times with no
trouble. However, this time it said that a feature was missing and I needed
to insert my 2000 Small Business CD. I did so, but now the document is just
a bunch of little squares. All my text is gone. Other documents in the same
folder are doing the same thing, but not all of them.

Any ideas what is causing this and how I can fix it?