Magento

I want to look at selling some products in 2 currencies, HOWEVER, I want the currencies fixed i.e. I set the price, it is not an exchange based conversion.

The reason for this, is that I will want to keep the same item in 2 different countries and deliver based on order destination. In Europe I will use GBP or € and RoW will be US$.

Ano one with thoughts on if/how this can be acheived?  Is it a dual store scenario?