1. In an interactive-mode language translation system comprising a host interconnected with an access device arranged with a processor having a memory, a heyboard and a display screen, wherein a user selects a format via the keyboard and the host generates and sends to the access device an original image of the format which includes field identifiers and both protected and unprotected data fields, the method comprising the steps of saving the original image displayed in an original language in the memory of the processor, processing said saved original image to produce an auxiliary image having field identifiers and both protected and unprotected data fields corresponding to the original image, displaying on the screen said auxiliary image with its unprotected data fields highlighted, modifying via the keyboard any of said auxiliary image identifiers and data fields in accordance with user-defined customizing requirements to created a translated image, displayed in a replacement language, processing said stored original image and said translated image to generate a data file indicative of the contents of both said saved original image and said translated image, and storing said data file in the memory without overwriting said saved original image.