Apple has posted a FAQ about their new iBook Logic Board Repair Extension Program.
The program is "a worldwide program covering repair or replacement of the logic board in specific iBook models manufactured between May 2002 and April 2003 that are experiencing specific component failures."
This program begins today (January 28, 2004) and will cover affected iBooks for a period of 3 years from the time of first retail sale. Apple will cover all costs involved, including shipping, for eligible customers.
To participate in the program, call the appropriate AppleCare Contact Center for the country in which you are located, or contact a local AASP. The U.S. support number is 1-800-275-2273.