Newbie wordnet and pywordnet

[Dwi Sianto Mansjur]

I am trying to use pywordnet in window environment.
After extracting pywordnet into python folder, I am not sure how to
include the wordnet database so that python recognize it.

Running a simple example, I got the following error message.
>>>N['dog']
Traceback (most recent call last):
  File "C:\Python23\o90.py", line 5, in ?
    N['dog']
NameError: name 'N' is not defined

thanks in advance...