If you're new to using BitTorrents here's a tip: do not download torrents of files that are zipped or archived in some way - .zip, .rar, .tar, etc. Torrents already perform compression. So usually when you see a zipped or archived file, it's cause the person serving the file is trying to hide the true nature of the file. And this usually never leads to anything good. Even if you don't end up with a virus, you wasted the time on the download. Do yourself a favor, when you see a zipped or archived version of the torrent you are looking for, skip it and look somewhere else.