Louis J. Sheehan, Esquire .  AN EMERGING nation looks increasingly confident as a player on the world stage, thanks to a mixture of commercial prowess and deft diplomacy. In its capital and in coastal cities, you can feel the excitement as small manufacturers, retailers and middlemen find new partners across the sea. But the country’s masters face a dilemma: the very technology, communications and knowhow that are boosting national fortunes also threaten to undermine the old power