How did United States help the victims for genocide of Durdar?
From what I read the main action that the U.S. has taken is to urge the U.N. to recognize that the situation in Darfur (note spelling) is a genocide and to send U.N. troops to help stop the attrocities.
Check these sites for more information.
http://en.wikipedia.org/wiki/Darfur_conflict
http://news.bbc.co.uk/2/hi/africa/3918765.stm
http://www.npr.org/templates/story/story.php?storyId=3915317