(#) Zaz 2010-03-05
Do you mean you downloaded the torrent? Did you read the part about needing to download microtorrent as well? I provided a link.
If you mean you downloaded the torrent content proper, that is simply a zip file. If you are on XP or later, windows should be able to download it on its own; otherwise you need some sort of unpacker - I'd recommend winrar.