on-line computer services in the field of international commerce and trade, namely, providing data and information relating to international trade laws and regulations, tariffs, duties, taxes, customs cost, import and export regulations, restrictions and fees, legislation and news articles relating to same, and computations of tariffs, duties, taxes, customs cost and import and export fees for international shipments of goods, via an interactive global computer network; real time provision of information and advisory notices relating to tariffs, customs fees, duties, taxes, import and export regulations and fees via an interactive global computer network