To choose a data conversion firm, it is advisable to consult with several firms that have the ability to convert the type of data you wish them to convert. Have each of the firms convert a small amount of data in order to compare the accuracy and workability of the end product.
Security is always an issue when working with critical business data, so choosing a data conversion firm must, by necessity, involve checking on a firm through law enforcement, The Better Business Bureau, and through current and former customers. Never be embarrassed about asking for references and always check references thoroughly.