When you donwload a crack from GameCopyWorld, you will get a RAR or a ZIP file.
Both file types are archive, containing the file you want/need.
To extract the file from an archive you need WinRAR (download from
www.rarlabs.com). With WinRAR you can handle RAR & ZIP !!!
After you have extracted the files copy them to the directory where you have installed the game. Windows will tell you "There is already a file with this name. Want to overwrite?". You have to click YES to overwrite the original file with the cracked one.
Thats all!