The importer is a desktop application that is performing automatic download / unzip / and convert of the historical data located at http://ratedata.gaincapital.com/.
You can choose to create 3 different import formats MySQL import, Oracle import (thus allow to setup your database field names you wish to import into) and soon MetaTrader 4 history format will also be supported. MetaTrader usually have problems with historical data, that results in innacurate back-testing results.
Say NO to inaccurae results! Automaticaly get the most accurate and detailed historical data for all forex instruments from the most reliable possible historical data source - gaincapital.com.