i have problem to download this. There comes text "installer needs the next part(.bin)file" pleas specity the location of part 4 and clik ok. but when i clik browse putton, i don't find nothin those bin files what i downloeaded. What i have to do to get dowload my game

Did you download all of the files? They would be located in your downloads folder by default.

If downloading and installing games is difficult for you, GOG has a client called GOG Galaxy that will do it for you.