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 updated CD includes DiskWarrior 3.0.3 and will start up from an updated version of Mac OS X 10.3 (Panther) that will start up new Macs. Using the DiskWarrior 3.0.3 CD Update will NOT create a CD that will start up your Mac if your current DiskWarrior CD cannot.