well 99% of em m8 all you do is copy the crack exe to the game dir and replace the game exe with the crack exe then click yes if it asks you if you want to replace the file.
Like Jester said right click on the crack exe and select copy go to the directory where you installed the game then paste the crack in there. It'll ask if you want to overwrite say yes. Then you'll be able to play your game. I can't really put it in any simpler terms.
*edit you have asked this in the Crack and Patch Forum so I'm closing this one.