No! I've read of people trying to do this with other p2p share programs with same result.

For a start, your LW downld preferences keep a track of how far each file has progressed with downlding. When it comes across a file it hasn't seen before, then at the very best it will start it at 0%. At worst it won't recognise it at all. I'd suggest you start downlding it again afresh but with LW.