I would really to like to volunteer for a couple of weeks in South America next summer. I was wondering if anyone knew of any good programs/organizations that are somewhat affordable and allow for ~2 week commitments. I am applying to dental school for the 2011 cycle, but I have always wanted to travel to another country and volunteer with a program dentistry-related before I commit myself to 4 years of intense studying and will not have time for such opportunities. I would greatly appreciate any feedback. Thank you!