MoveOn has organized a housing drive:
http://www.hurricanehousing.org/index.html. There is an overwhelming need for housing and shelter. This requires a national, not a local, response. People are suffering horribly. People on the ground are doing the best they can but the rest of the nation needs to be doing more, faster. Texas and Arkansas cannot handle all the refugees alone. Please help.
Also, links for other assistance:
http://www.hurricanehousing.org/index.html http://www.redcross.org/ http://www.fema.gov/