Accessing a file that does and does not exist

.. have received an email word attachment that was stored in OLK90.tif. I know
the path to get there and yet I cannot andthe search engine says it isn't
there. I have reopened the email and repeated my last action, without
entering data, an it still comes up recommending storage in OLK90. I have
exposed the hidden files, so that is not the answer. I have important
information stored there so I would really appreciate the help. I am using
Windows XP Professional.

Thanx