If bit tornado doesn't have such a setting then reinstall it and torrents will be reset to open with it it again.

You seem to know your stuff about torrents. if I DL torrents via LW is it safe or fo I need peergaudian or simular??

Always better to have PG than not to have it !
There are some dodgy torrents around,but mostly bad ones never download because of lack of hosts,they just clutter up your incomplete folder, and sit in your upload window,taking up places.
N2

Solution
 

For the guy who wanted limewire to stop stealing the bittorrent file associations. If you go into advanced options, under the tools -> options menu you will find the 'File associations' bar. Click on it and uncheck the box that says '.torrent' files. This should stop it from making the torrent files open in limewire. As to restoring the default program to bittornado, you could -as suggested- reinstall. Also I'm sure there is an option in the bittornado's menu to reassociate the torrent files to bittornado. Least there is in utorrent (which I use :P)
(For utorrent it's under options -> preferences in the general tab at the bottom. It's a big button saying associate with torrent files)

This might help a bit with the fake torrents ;)

Fenopy Fake Finder