Word 2007 Document properties greyed out – including SAVE AS…

The Document Properties section of Word 2007 is greyed out. When I try to edit a document it tells me that “modifications are not allowed because the selection is locked…” How do I remove the “lock”? Also, the Document Properties is all greyed out except for PRINT and OPEN and CLOSE. Everything else is not accesible. Any information / help would be greatly appreciated!!!