Re-Search (Requery) is already implemented as default for all files you try to download. Unfortunately, it only issues a new search once every 45 minutes (One search every 45 mins - not one search per file every 45 mins). Yes - this is to avoid congestion.

But - given time, LimeWire will keep looking for new hosts for the files in your download list.

I'd suggest that for person to person file transfer you would be better off with a dedicated program rather than try to stretch LimeWire/gnutella to be anything other than a p2p network.

FTP servers and clients are widely available and I believe that many of the ICQ/netmeeting style of programs support file transfer.

Mark