If you get a message that the document is "unavailable," the problem may be
a conflict with the Office Plug-in in Norton AntiVirus. See “OFF: Cannot
Open Office Documents or Cannot Edit Inserted Objects After You Install
Office XP Service Pack 2 or Office 2000 Service Pack 3†at
http://support.microsoft.com/?kbid=328613 (this was written for earlier
versions but I believe applies to Word 2003 as well).
Andrew Gaffney said:
I have had difficulties opening documents in Word 2003. The documents seem
to be Read-Only however there is no tick in the Read-Only box in the
documents properties. Assistance in unlocking the document would be greatly
appreciated.