having a normal user mount nfs filesystem

[Linda Hanigan]

I have been mounting our nfs with
mount 192.168.1.3:/usr/local/lib/letters /usr/local/lib/letters
It works great, but if someone accidently shuts down instead of logging
off the machine they of course lose the filesystem.
I would like to have away for a user to do this without a root password.
I vaguely remember setting up a way to restart lpr years ago without
needing a root password with some special file in /etc I can not for the
life of me remember the command. Anybody know what I am talking about?
                           Thanks
                           Linda