My Os is windows NT, I downloaded the bittorrent software and also bittorrent files but they refuse to play even though I
Have downloaded the latest versions windows media and divX. My computer does not have the software to play dvds is this
Required to play torrent files? If it is required please inform me if and where I can download it for free. Please help

You don't "play" torrent files. There are simply files that tell a Bittorrent client where to download whatever the file is. The idea is that you open these .torrent files with your bittorrent client and wait for them to download the file.

Read the first two sections of this for some general info on Bittorrent and using it:
http://en.wikipedia.org/wiki/Bittorrent

That said, if these movies you are trying to download are copyrighted material please note we will not be able to help you any more than what I've just said.

You would need to install the latest video codecs for whichever video software you currently running on your system