Check this out:
From the AppleStore 'important notes' section of iLife 04:
DVD drive required to install GarageBand and iDVD
iDVD requires a 733MHz PowerPC G4 or faster.
Burning DVDs using iDVD requires an Apple SuperDrive.
Burning iPhoto archives to CD or DVD requires Mac OS X v10.2.8 or later.
iPhoto book and print ordering services are available only in the U.S., Canada, Japan, and select territories; fees apply.
733 G4 - pretty steep, guess I need that proc upgrade now....
Lee