The Brooklyn Law School Library has in its collection Serving the Public: A Job Search Guide (Harvard Law School's Handbook & Directory for Law Students and Lawyers Seek Public Service Work) (Call #KF299.P8 P83) in the Main collection. Volume 2 of this annual publication is dedicated to International work. It describes working in IGOs, NGOs, and in foreign government settings and provides advice and information on required skills, salary ranges, internship and volunteer opportunities. It also lists fellowships and grants and includes a directory of NGO, IGO, and governmental employers. It also includes information on law school summer employment opportunities.
The International Law Students Association (ILSA) has Chapter Program Grants on this link. The American Society of International Law has a web page on Fellowship and Research opportunities. The ABA Section on International Law has the Rona R. Mears Student Writing Competition & Scholarship Awards with a January 2011 deadline. The New York State Bar Assciation has the Albert S. Pergam International Law Writing Competition Award with a December 2010 deadline for a $2000 prize. There are others. Searching for law student scholarships involves creativity and work. Think broadly while looking for scholarships. Feel free speak to a reference librarian at the ref desk for more information.