Where to Get Help From Katrina
543-5600 is the phone number for the official Memphis Katrina refugee help line. If you're new to Memphis and needing help ASAP that's the number to call.
Also, River City Mud Company has an exhaustively comprehensive post with nearly every help option there is. I can't possibly improve on it (except to add that Walgreen's is matching customer donations at the register dollar for dollar), so go and benefit. Great work by autoegocrat; thanks.