[AccessD] Opening a word document from code

I'm working on code in Access 97 to simply open an existing Word document
from a network drive, add a quick line of text at the top of the first page,
then close the document.  I'm running into problems when someone else has
the Word document open.  Does anyone have code to tell if a Word document is
open before attempting to open it and getting an error?

TIA

Rusty Hammond