Hola, I found a 900MHz iBook G3 for 600.00 and an 800MHz model for 400.00. Basically I need portability, Photoshop, iTunes, Quicktime Pro, iMovie, Office apps, and a few games (like Call of Duty on the lowest settings, or something 2D). Any opinions on these G3's? Should I spend a few hundred more for a new iBook G4? Thank you.