ORIGINAL: Missileman

Not hard at all.Sounds complicated but once you do it you will find it not that hard.
First off make sure that you have written down all of the settings how you want them and the corresponding stick position for that selection.
Start with the transmitter on and stick at full throttle (I remove the main blades just in case of accidental start up) Plug in your battery, you will hear 3 beeps, then 4 beeps then a wholes bunch of real fast beeping that means the ESC has sensed high throttle, move the stick all the way down to low throttle, you will again hear a whole bunch of beeps, the ESC has sensed low throttle and has gone into program mode.
It will then start a series of single beeps and will do this 5 times. The single beeps indicate mode 1 which is your break setting. Stick high is off, stick middle is soft break and stick low is hard break. I set mine to off. Move the stick to your desired setting WHILE the single beeps are still going and leave it there, you only have about 5 seconds or its too late (that is why I had you write down what you wanted before you started) You will hear a series of rapids beeps meaning mode one is set, it will then beep twice pause beep twice and so on indicating mode 2 which is electronic timing, same proceedure as mode 1, repeat until all 5 modes are set, use the chart in your manual to see what the settings are, after mode 5 is set unplug your battery, you are done. Plug the battery back in with the stick low and listen to the beeps, the esc will beep all of the settings and you can verify you have it right.
CAUTION: If you don't hear the beeps as described at the beginning and the rotor head starts to turn while moving the stick down it is likely your throttle channel is reversed.STOP and make sure the throttle is operating in the correct direction.