How do you display the actual user who has the file locked for editing rather than the administrator?

I have users who access files in a terminal server environment.  When 2 users access the same file on a network drive the 2nd user receives the message "file locked for editing by administrator".  When you look at open files it shows the file is actually open and in use by Joe User and not administrator.  Does anyone know how to make the inuse file pop up show the user and not administrator?  This is a windows 2003 server environment.