Hi...
Other clients like Phex are also able to resume downloads. The special thing with Phex is that automaticly search for new download candidates with the same file. The filename has not to be equal you can specify any search term yourself. Once a file matches it will add the download candidate. This way you can let your client run for days without maintenance and it will try to find hosts and starts downloads until you have the comlete file.
Gregor
http://phex.sourceforge.net