Home > Setup & Configuration > Currencies
The bottom 2 sections will only appear if multiple currencies are set up.
This feed uses the Euro as a base rate. If your store's default currency is not the Euro, you will need to use another feed to get live rates. To do this, populate the following Settings with the appropriate values. This is an advanced feature that will require a developer to create a custom XML package to handle the feed.
After clicking the 'Get Live Rates' buttons, two text fields with some XML will appear. Those are for debugging purposes for sites using live rates, and can generally be ignored unless you are having a problem with the live rates feed.