Luafilesystem problem

[Steve Heller <steveheller@...>]

I can't seem to get the luafilesystem library to work.
No matter what I do, I get a popup message that says
"The application has failed to start because
lua.5.1.dll was not found. Re-installing the
application may fix the problem." When I click "OK", I
get the following:

lua: error loading module 'lfs' from file
'D:\dev\lua\lua-5.1\src\lfs.dll':
        The specified module could not be found.

stack traceback:
        [C]: ?
        [C]: in function 'require'
        dirtest.lua:1: in main chunk
        [C]: ?

Any suggestions as to how I can get this to work?
Obviously it is on Windows.