First you need 2 programs:
1.winrar
2.power iso
First open one of the zipped files and extract a file you'll find in there with the capacity off 700mb or the same size which you downloaded through the torrent,extract it to desktop or whatever then use power iso to open the file, just setup power iso first, then mount the image which you exctracted from the zipped files with power iso, open the drive power iso creates and set up the game through the cd in the power iso drive..simple dude