Need to fix display currency for each prodduct.

[metalbox]

Hi

As the subject says I need 

1. I am in country A and my  site operates in country B.
2. My payment processor only transacts with  country A currency
3. Display currency needs to be fixed i.e. set at product level in country B
4. Base currency needs to variabl.
5. The site operates in a restrictive industry so I can't just change payment processors that allows me to process payments in Country B currency

Is there a way/ module that allows me do this.

Thanks