You are fighting two battles: The first is the shear OS difference. The second is the logic chip difference. I’ll assume that you are running with an x86 processer (32 bit intel). OS 8 ran on “PowerPC” chips. Fundamental differences in these chipsprohibit you from being able to install even a cracked version of OS 8 on your computer. You could try pearPC, a powerPC emulator. I’ve not used it myself, but you may be able to get it working. I hear that this flavor of emulation is slow, however. The short answer to your question is that there is no real simple way to do this. Another solution you may explore is a legacy Windows version of the game. Some games were developed for both platforms. What game are you going after? I may be able to look something up…