Ispell problem - cannot find dictionary - although path and file exists

- I have emacs 21.3 running on a windows machine (XP).
- Also I have cygwin on the same machine.
- I downloaded the latest ispell software and the program is located at C:\usr\local\bin.  (emacs finds and runs the ispell program)

- The ispell library (dictionary (english.hash) is located at C:\usr\local\lib ---I have checked the dictionary  is at this location

- When run ispell (M-x ispell or from the menu) the ispell program is fouind and starts running.  However, I keep getting the error message "can't open   /usr/local/lib/english.hash."

    - I don't see any variables to change the location and emacs can find the ispell program which is on the same branch.

Any help/suggestions?

KC