I just took mine into the Apple Store and waited in line at the Genius Bar. Took about two weeks.
"How long is the Expanded iBook Logic Board Repair Extension Program available?
The program covers affected iBooks for three years after the first retail sale of the unit or until March 18, 2005, whichever provides longer coverage for you. Apple will continue to evaluate the repair data and will provide further repair extensions as needed. "
"The program is available for certain iBook G3 models (see below for a complete list) with serial numbers in the following range:
UV117XXXXXX to UV342XXXXXX
iBooks with the serial numbers listed above may be referred to as:
iBook (16 VRAM)
iBook (14.1 LCD 16 VRAM)
iBook (Opaque 16 VRAM)
iBook (32 VRAM)
iBook (14.1 LCD 32 VRAM)
iBook (800MHz 32 VRAM)
iBook (900MHz 32 VRAM)
iBook (14.1 LCD 900MHz 32 VRAM)
iBook (Dual USB)
iBook (Late 2001)
iBook (14.1 LCD)"
http://www.apple.com/support/ibook/faq/