In an Excel cell, how can I reset the default hyperlink folder
 

I have been unable to find a way to change the default source folder for a
hyperlink to a file. For some reason, the very first time I did this, the
default folder was set to a folder on my desktop, and I cannot now alter this
to always look in a subfolder deep within "My Documents". I am sure there is
a way! I would appreciate some help. Many thanks.
--
Tony