Is there a Reliable English to Korean Translator?

When I turn 14 my parents always sends us to Malaysia to be with family for the summer. But I begged my mom to let me go to Seoul, Korea (my aunt has connections :D) Well I still have a year left and I want to learn Korean. If there isn't a good online translator I might buy Rosetta Stone, or could someone recommend a site with basic phrases that i can use to survive 2-3 months in Korea? (and to know how to pronounce it would it be good to use Google Translator for just pronunciation?) I'm so sorry for these confusing questions but it would be great if someone could answer a majority of them :)