In these days, trading automation is one of the major topics in the field of financial research. Buy and sell are the key rule to an automated trading system which is possible to generate by various technical indicators in Forex. Benefits and disadvantages of each indicators, has its own. Regarding to our first research result which was based on P-sar indicator and published in the IIAFC conference. In this paper, we will focus on the MACD indicator for four currencies namely EURUSD, GBPUSD, USDCHF and USDJPY individually to identify effectiveness of the indicator regarding to the amount of profit generated, using hourly data of market stretch from January 2001 to December 2010. Virtual Historical Trading Software (VHTS) is developed for the purpose of computing the indicator based on its original formulas and interpretations; for applying the assumptions; for trading based on buy and sell signals generated by the MACD indicator.