I had forgotten to set the right mouse button to secondary, which made inputting the codes in Terminal rather tedious. Next time copy/paste will definitely be used.
My next step is getting my GT210 graphics card working. In Lion it worked OOB, but not in Mountain Lion. I've tried resetting the iGPU to Auto again in Bios, without success. Do you have any suggestions? Have you got your ATI5750 working?
I'll try over clocking soon, but it is very fast even at rated speed. I have a Hyper 212 EVO cooler which is a popular choice and the system is running cool now.
Thanks again, your guide was well documented.