2 currencies setting problem

[Zacklee]

I just had an ecommerce site build on VM but now there is a problem with the currencies setting. I want to set 2 separate price for my product for 2 countries individually and not automatically converted with the exchange rate. e.g Taiwan dollar is NTD$790 which upon selecting USD from the down menu the prices changes to $23.96 USD. I don't want that, I want to set TWD$790 and USD$35 individually...is that possible? please help! my email is zacklee5168@gmail.com