And also FC 6 wouldn't run in classic anyway, would it? So would it have worked even on a PPC Mac? Perhaps you can call Apple directly and see if they can hook you up somehow? Or I guess perhaps ask a friend to let you use their PPC Mac? Or I guess perhaps you could try running it in Sheepsaver, but again, you're trying to install it primarily so that the OS X installer will find FCP on your computer, right?