>So are ther any advantages in using currency as a data type, instead numeric or double? Apart from output format with the currency sign?

Internally, a currency value is a 64-bit integer which just gets divided by 10000 when used. So any computation with it should be a lot faster than the usual IEEE format floating numbers. It's perfect for financial apps where you may have a long computation.

Other than that - you may need to check your computation for potential errors; when computing anything that includes division by numbers between -1 and 1 you may be better off by using regular IEEE numbers - they may not be as fast, but they maintain a 15 digits mantissa. If you're not sure when and where will VFP internally convert from currency to IEEE and back, you may consider using ntom() and mton() functions to enforce your own order.

BTW, just heard your new president on the radio. She surely sounds good.