Equtiy Option Data

[Marc Saegesser <mas@xxxxxxx>]

Does any one know of a data provider that provides equity option data?
Several things I've read lately talk about comparing the current implied
volatility with the historical range of implied volatilities to determine
whether an option 'cheap' or 'expensive'.  

I can determine the current implied volatility by laboriously typing the
data into OptionScope, but I need a way to get the historical data.

Any help would be greatly appreciated.


--
Marc Saegesser
mas@xxxxxxx