I´d suggest you to use our best friend Google to look up for that... Here are a few links I found in less than 5 min just Googling... http://www.forex-tsd.com/expert-advisors-metatrader-4/58-trailing-stop-ea.html#post68053 http://www.forex-tsd.com/expert-advisors-metatrader-4/16502-trade-manager.html#post237681 http://www.forex-tsd.com/expert-advisors-metatrader-4/7552-swiss-army-ea-automatic-order-management.html http://www.forex-tsd.com/tools-utilities/564-trailing-file.html http://www.forexfactory.com/showthread.php?t=89371