I donated money to the swedish aid group "Läkare utan gränser" think they are internationly called Médecins Sans Frontières after they where on Swedish radio telling that they are gathering a team of doctors and nurses to help out. These doctors work for free on catastrof sites all over the world and are doing a incredible work.
Dont know though if they have recived a OK from the american gov to come over and help :S
Found there international website
http://www.msf.org/