Full UNC path in Word 2002 footer

[Trace]

Hello

I read on this newsgroup that it is possible to put the filename and path in
the footer of a document using fields, field codes and field switches. But
when I do it, I still get the mapped drive letter and then the path\filename.
Am I expecting too much, or am I doing it wrong? What I want in my footer is
\\servername\sharename\path\filename because my mapped drives change all the
time.

thanks
Trace