Loading wordnet in R

I ve installed wordnet 2.1  and R 2.11.0 on windows 7.
Whenver i try to load wordnet in R, i get an error
initDict()
FALSE
cannot find wordnet 'dict' directory, Please set the WNHOME variable to its
parent.
I have tried setting WNHOME to "C:\Program Files
(x86)\WordNet\2.1\dict","C:\\Program Files
(x86)\\WordNet\\2.1\\dict","C:\\\\Program Files
(x86)\\\\WordNet\\\\2.1\\\\dict".
None of them helps.
Please help me out.
Thanks in advance.

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