From FEMA:

People who suffered losses because of Hurricane Gustav should register for assistance by calling toll-free 1-800-621-FEMA(3362). People who are speech-or-hearing-impaired should call TTY 1-800-432-7585. Phones lines are open 24 hours a day, seven days a week.

Click here for more information. 

Those in need of assistance should call the American Red Cross at 1-866-438-4636. 

The Red Cross will provide emergency assistance in the following ways:

1. Sheltering for people who have lost power or otherwise find their homes unlivable

2. Mobile feeding trucks and kitchens in the hardest hit areas for people who need water and a meal while cleaning up or because they have lost power

3. Emergency financial assistance based on significant structural damage to someone’s home.

4. Clean-up kits including: mop, broom, cleaning supplies, work gloves and similar items.

5. Emotional counseling and support.

Click here for more information.