possibly..........
(hmmm)
save the results to a file on the server, then use a javascript call to set the window's location to ftp://<host><filename> (this assumes you have anonymous ftp access set up, obviously.)
this should then prompt the user to save the file locally.
i think. i haven't tested it. have fun ;-)
it would be better netiquette, though, to simply provide a link to the file saying 'click here to save a copy of your results', or somesuch.
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rad