I will be traveling to Saint Maarten in September. I have a unlocked Samsung Vibrant and plan on purchasing a SIM card from Orange Wireless for local calls on the Island, unless they sell SIM cards with international credits already on them. I just want to know what would be the cheapest route for me to make calls back home. So far it looks like using the NIM BUZZ app and making the calls VOIP will be the cheapest way. Any information is well appreciated.