Scrub mussels well and remove beards. Squeeze enough juice from limes to measure 1/3 cup. Boil the lime juice, coconut milk, wine, curry paste, garlic, fish sauce and sugar over a high heat for two minutes while stirring. Stir in mussels, and cook, covered, until opened (about 5 to 8 minutes). Discard any unopened mussels, and stir in the coriander. Serve with lime wedges.