i am new to this site and stumbled upon the same when was searching when i was searching for "real time NIFTY PCR calculation". the calc provided by my online brokerage service does not seems to accurate and each time I have to manually go to the NSEINDIA site and do the calculations. this is not a efficient way and therefore would be grateful if there is a automated solutions available. like lost of you i too am interested in the stock markets and find that the opp of gains in options trading is tremendous as compared with the cash and futures markets.