I'm not a Windows person (just passing thru), but I'd suggest when you're attempting to run 2 apps that attempt to compete for bandwidth, one or both will suffer. Depending on your type of connection, you can reduce (sacrifice) the abilities of LW to give Kazaa (a greedy app) more bandwidth. Both are competing with each other for both bandwidth, ram & cpu time-sharing. That's why! 2. This Q. has been asked before on this forum, & from memory, the answer was 'unlikely'! LW keeps its own dwnld history & if a file shows up that doesn't match its prefs it'll simply treat it as a 'virgin' new file/ignore it.