[AccessD] Find File in Folder and in Subfolder

I have a customer who wants their application to be able to find a file in a
folder or subfolder based on the entry in a text box.  The data entered is a
part number, and the file to be found is the drawing for that part.

However, their file structure is inconsistent.  I've looked at FSO, but that
requires that the path to a file be known.  DIR is a help with the
file/folders at the first level.  

Is there something that will search all the levels within a folder for a
specific file?

Thanks!
Dan Waters