Although the foreign exchange (also known as "forex" or "FX") is the largest financial market in the world, it is relatively unfamiliar terrain to retail traders. However the big slide in the U.S. dollar since early in 2002 has opened the eyes of many investors to the global currency markets. Until the popularization of internet trading a few years ago, FX was primarily the domain of large financial institutions, multinational corporations and secretive hedge funds. But times have changed, and i...