Hi there,

The game you downloaded is in winrar format you must unpack it with winrar program. Double left click the first file or right click open. You can then extract to the place of your choice.
Install the game then copy the crack file into that folder, it will probably say the file already exists do you want to over write it, say yes. all you are doing is replacing the game .exe file with the crack file to make the game work.

Kevin