Not being a win person I can't exactly elaborate on what you've done but probably unshared your folders & affected your dwnld folder. See: http://www.gnutellaforums.com/showth...threadid=25314 & double-check your dwnld folder selection (Tools-Option & Saving.)
As far as searching & dwnlding, take a few hints here (click on link.) It's one thing to resume files, but try to stay away from force resuming files from the LW Library window's incompletes folder. The reason is that sometimes the restart from 0%.