Disable the Office Plugin that comes with Symantec/Norton AntiVirus.
See http://support.microsoft.com/?kbid=329820 "How to use Office
programs with the Norton AntiVirus Office plug-in" for more information.

Mr. Roswell wrote:

New Computer with Student-Teacher Office 2003 installed as an after-purchase.
It recognizes all of my old documents (made in Word 2000), but whenever I
attempt to open any of them, I get "Not Available."
All of the files open in Wordpad and in Publisher.
Also, the prompts for the NOrmal.dot template are annoying and make little
sense.
Anyone else been through this?