http://www.alsoft.com/DiskWarrior/support.html#Panther
If you already own DiskWarrior 3 (your CD is gold and white with the image of the DiskWarrior shield on it)
AND... ...your current DiskWarrior CD will not start up your Mac, you will need to
order an updated CD from Alsoft (a charge will apply) in order to start up your Mac. The DiskWarrior 3.0.1 and original 3.0.2 CDs cannot start up 2004 eMac (USB 2.0), 2004 iBook, 2004 PowerBook, and dual 1.8 GHz and 2.0 GHz Power Mac G5 models. The DiskWarrior 3.0 CD cannot start up the original Power Mac G5 models, PowerBook and iMac models released after September 2003, eMac 1 GHz G4 machines, and iBook G4 machines, in addition to the above machines that the DiskWarrior 3.0.1 and 3.0.2 CDs cannot start up. The updated CD includes DiskWarrior 3.0.2 and will start up from an updated version of Mac OS X 10.3 (Panther) that will start up the above Macs.