PROVIDING A WEB-BASED BUSINESS-TO-BUSINESS SERVICE ALLOWING ACCESS TO A MULTILINGUAL, MULTIPLATFORM DATABASE THAT ENABLES AND ASSISTS USERS IN ARRANGING AND COMPLETING ALL ASPECTS OF COMMERCIAL TRANSACTIONS, AND WHICH INCLUDES A SET OF LOCAL COMPUTER PLATFORMS THAT CHANGES DATA REGARDING LEGISLATION, TAXATION, CUSTOMS, MANAGEMENT, LEGAL FORMALITIES AND OTHER ELEMENTS OF BUSINESS TRANSACTIONS, DEPENDING ON THE NATURE AND LOCATION OF SPECIFIC TRANSACTIONS