You change it in Windows, not LW.
You just need to go to the folder options for any folder and you can access the settings from there. Here's the long way around:
(This is for XP)Go to Start > Control Panel > Appearance and Themes > Folder Options > File Types, in the window will be a list of file types, Scroll down the list till you find Torrent(TORR). Hi-lite it and go below the window where it says "Opens With" and click "Change". Find the program you want in the list. hi-lite it and click ok. That should be it. Try d/loading something and see if it works.
Sample picture here > > > http://www.gnutellaforums.com/attach...options-01.gif