Hello if it is perl that you are using you have posted at the right place.
please make sure you send out the following headers.
Content-Type: $mime_type
Content-Disposition: inline; filename="$filename"
that should do the trick
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Raditha Dissanayake
<a href="http://www.radinks.com/sftp">http://www.radinks.com/sftp</a>
Lean and mean sftp applet with GUI.