I am trying to get OS 8.6 installed on an upgraded G3 B&W with a 650 Mhz G4 cpu in it. I want to use it as a retro-style juke-box to play a 120 gig mp3 collection. I have the original applecare OS 8.6 Install disk but it is for when it was a G3. Any time i open either quicktime or itunes 1.1 in OS 8.6 it crashes. According to this chart : http://docs.info.apple.com/article.html?artnum=25114 my mac (which has become a G4 PCI) will run 8.6 but only with an OS 8.6 install disk that would have come with a G4 PCI when it was new. Apparently there are some extra extensions that either disable Altivec, or allow 8.6 to access it. Any help would be greatly appreciated. I went into a local Apple store and asked and they (all of them under 25) looked at me like like I was a bark eating hermit. Thanks.