I really need some help with the GB Doom i can't get it to work at all it's imposible for me to get working so if you can please help me PLEASE

Ok this is what I did. Ijust highlighetd the files that say Ray, Peter, Egon, Ray, gbgfx, colmaps, gb demo, slime, fun_2.deh, gb2.deh, wintex , and dehacked and draged them into the z doom (the little green man) and it worked for me.