Sales order Item condition currency

HI

i have following requirement

In sales order item conditions Currency should change automatically From USD to INR, it means USD is sales document currency.

But in PO currecny is INR, so i want to populate INR in Sale order items condition type PR00, there is BAPI which trasfer PR00 price from PO header, but now i want transfer the same currency type in to Sales order.

regards

satsih