Problem with Eastern Front

Hello guys, i dont actually know am i righting in the right place but thats the problem. I download CoH: Eastern Front , here's the info: imgur.com/w5fK8g4 , well when i done installing it i clicked "Play" then it typed i gotta locate the patch of the CoH i thought i should locate the original CoH at first time but when i located it and started a game it opened a original CoH. So.. After that i started locating patch of CoH: eastern front and then click play, and thats the problem. It typed me that unavaible to find file CoH.exe , i copied CoH.exe of directory original coh's and pasted in directory of front's mod. Then the problem with .dll files e.t.c , so what should i do? Any suggestions?