Divide the orange liqueur and the sugar among the wineglasses and warm in a microwave. (If you don't have a microwave, fill the glasses with hot water before proceeding, then drain the water and add the liqueur and sugar.) Light the liqueur -- this is best done in a dim, romantic setting where the flickering blue flames will have the most dramatic effect. While the flames are dancing, pour coffee to within about 1 1/2" of the top of the wine glasses; this will extinguish the fire. Divide the