1. A multiple language support system for an application, the system comprising: a resource data management unit for storing first resource data corresponding to multiple languages available in the application in a memory, the stored first resource data includes at least one of Menu, Help, Toolbar, Icon, Dialog and Font for a language, and information on a country; a resource data processing unit for extracting second resource data corresponding to a selected language from the first resource data when a user selects a predetermined language in the application and applying the extracted resource data to the application; and a language conversion unit for converting a language of data transmitted between the application and the operating system when the languages of the operating system and the application are different, wherein the language conversion unit converts the data received in the language of the application from the application into data in the language supported by the operating system, and transmits the converted data to the operating system, wherein the language conversion unit converts commands in a language of data transmitted from the operating system into commands in a common language used by all applications, and transmits the converted data to the application, and wherein the stored first resource data is received through a predetermined communication medium or a predetermined recording medium.