New housing for my Asus ROG G20

Hi,
first please excuse my bad english. So i have bought a Asus ROG G20 but i want to overclock it so i need more cooling wich isnt that easy in a small case like mine. I´m not good with hardware stuff so i need your help before openig it because i think i gonna crash it completely. I saw it opened and there was like a cooling plate on the cpu.

So how i get that all out of it without killing anything in that pc and put it in another case (define r4)

Thank you :D