The good news: If you've survived Hurricane Katrina, the government will let you register for help online. The bad news: But only if the computer you're using is running Windows...
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I tried myself to access the FEMA site (http://www.fema.gov/register.shtm) using the latest version of Mozilla Firefox on a Windows PC, a brand new Mac mini and a Linux laptop. No luck.  Whenever I got close I was directed to a page which told me to try again later or “We are sorry for not being able to proceed your requests because you have failed our tests.” Trying with Opera, Netscape or Safari wasn’t any better.