Should I buy OS 9.1? I mean I try to run programs and it has to open up classic, which I don't have bc I don't have OS 9, but beside that. I have TechTool Lite, and I need to use TechTool to fix my PRAM problem, but I don't want to pay $100 for it. I can buy OS 9.1 for $36.99 and that. Should I just buy OS 9 and then ZAP PRAM using Tech Tool Lite? Or should I buy TechTool 3.0.9 for $100? Also if I go with OS 9.1, how do I install that with OS 10 on my main partition? How do I boot to the other?