PC  Market  Strike  Days  Rate  RiskFree  Volatility  Compute  Default  Price
                   
                   

The second row is Garman-Kolhagen where Market=1.56 Strike=1.6 (meaning say EUR 156 USD 100).
The Rate is for EUR and RiskFree is the Rate for USD.

There is no error checking and Put or Call has to be entered as uppercase P or C
Wilmott Online Technical Forum For Derivative Experts