How do I program this transmitter & receiver?

I just make this project for my assignment.

I use 2 atmega32 as transmitter & receiver.
Actually, I don't know how programming these microcontrollers use C language.

Would you like to help me?
Thank's before.

I hope you don't expect that posting the same question three times in different parts of the forum will get you help quicker or win you any friends.

Duplicates deleted.
DO NOT CROSS-POST, CROSS-POSTING WASTES TIME.