Yea well .. what part do you need help with? I've written a script that auto dl from other trackers and recreates a new torrent and autoupload to some trackers.
The script triggers on an event from rtorrent when a torrent is ready downloaded but you could make it trigger on other things. In Linux I would use inodes or something .. in windows I dunno but there are surely events to trigger on. Or if your ftp client can run a script when it's ready with a transfer.
Also the upload process differs from tracker to tracker so some modifications is surely needed there as well.