http://www.gnutellaforums.com/window...tml#post183932 but that description is for deleting the prefs folder. However it will show how to find it.
For Vista, see
http://www.gnutellaforums.com/genera...der-vista.html
If you are using LW 5 on new computer, to add the already downloaded files to the library, see
http://www.gnutellaforums.com/gettin...s-windows.html although birdy was updating a copy of that thread for LW 5.1 it is not in public view yet. It is possible to drag & drop files/folders from desktop to library. But to share you need to right-click & choose to share.