Change Currencies on Items and Invoices

Hi all,

Our system is set up with Local Currency and System Currency being US Dollar. Now we have a situation where some of the products we buy and sell are linked to the RMB exchagne rate (Chinese Currency). We will still enter the inovices in USD, but the core price is in RMB using the current excahge rate to the USD.

What is the best way to acheive this?

Many thanks,

Myran