manoccs: Its not easy to extract the AMSS out of the phone but it IS possible. If you're desperate and have a friend who has an unflashed phone meet me on irc and i'll talk you through it. It doesnt require much knowledge from you to execute the commands and sw i need
mvnjpy: It should work, but I think they use 850 and 1900 bands for 3g over there. samsung only supports 1700 and 2100 if i remember corectly. Have a quick google and check.