To use simply extract the files change into the directory and use. Once you get into OSX you will want to run the attached mprime program to stress test you machine to make sure the overclock is working well. Now once in there set the PCI-e bus from auto to 100 then the ram multiplier to 2X your FSB to 343 now go down to the voltages section and up the voltage by +1 or +2 for the ram making sure the timings on the ram look sensible something like 5-5-5-12 or 15 now this should get you ~2.4GHz once saved and rebooted. I would add that with your board when you first go into the BIOS use the CTRL + F1 keys at the same time so you will see your ram timings when you enter the overclocking option. be carefull when playing with volts your temp will rocket and you could kill your CPU.
You could also try increasing your V.core a tiny amount. The Gigabyte Mobos OC well and i think you could get a little more out of it. RAM is cheap rite now, head over to Overclockers UK and pick up 2gb of DDR6400 or 85000 if you can afford it. DDR6400 (800mhz) ram would allow you to push alot further then you will be able to with your 5300. if your still running and your temps are acceptable go back and push a little further. get into OSX and run a bench loop it a few times. 5 increments ensuring your RAM ratio is set 2:2. Not being able to boot into an OS is a sure sign of having gone to far. Your ratio RAM to FSB helps, on my MOBO i have the ratio set to 2:2 so so 400 FSB = 800mhz (RAM) if you have the ratio set to auto the mobo sets the speed far to far when OCing and you will not boot into anything. but also there are a few things you can do in your BIOS. Well, at a guess its your RAM holding you back.
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