When I installed these on my G4 DA with 10.4.11, I had to install X11 first; OOo is really Linux based, and required that graphic subsystem. Unfortunately, I don't remember how I did it, but I think that it's available on the OSX 10.4 install disk. If that doesn't work, Iwork disks are readily available on the LEMSwap forum or eBay. I think that I paid $50 for Iwork 08, and it generally works fine. My only complaint is that I'm a math teacher, and Iwork 08 won't support enough math symbols. The 09 version supports MathType, and is much better for this function for that reason. - Michael B. in Cincinnati