Using Peter Hoadley Option Calculator

#1
Hai all,
I have successfully downloaded the free version of option calculator provided at www.hoadley.net. However, I do not know how to use it. Can any experienced senior members please please explain me how to use it. Also, where can I get data with regard to historical volatality of various options traded at NSE?
A lot of thanks in advance
munchikana
 

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