IBook PowerPC G3 700 MHz 256 MB OS X Ver 10.2 I want to upgrade OS X to 10.4.7. I don't have acces to high speed internet so I had someone download it on a pc and burn it to disk. It loads and goes through "mounting..." when it stops doing its thing, the installer comes up tells me it cannot load the software. I have tried reloading the operating system to no avail. I also have noticed that my help files won't load either...possible connection???? Any suggestions would be appreciated..Thanks.