You want to download torrent file with IDM so check these steps :
1. First download the torrent file with .torrent extension which you wish to download from the internet directly without any torrent client like utorrent.
2. Now open http://sh.st/wQaiB and you will land on its homepage .
3. Then Click on upload Torrent and browse your torrent to transfer and click on Go.
4. Then it will ask you for Free or Premium service, choose Free to proceed further.
5. It will take some time to cache your file. Once the caching is done, click on transfer button to download your file as shown below.
6. You should have internet download manager installed on your computer so that download start inside IDM. If you don't have IDM don't worry it will download directly.
**Note: If you decide on to use Free transfer then you wont be able to transfer file of more then 1 GB.