Ohyunjae:
Well, Mega isn't arrived yet. I will do my project fast. So I ask for help before arriving In Software Part..
It is much easier to help when you have tested you program and can tell us what it is doing that is wrong.
And if it is working properly you won't need out help!
The way the Timers work in the Mega is the same as on an Uno - there are just more of them. Study the Atmega 2560 datasheet.
...R