myfile.cgi?image.gif saved as myfile.cgi in mozilla?

From: joe (jcharth_at_hotmail.com)
Date: 04/30/04 

Date: Thu, 29 Apr 2004 23:41:39 GMT

Hi i have a pl file that prints
print "Content-type: application/octet-stream\n\n";
and then the output of a file
in ie it works fine the download.cgi?myzip.zip saves the file as myzip.zip
in mozilla however i get the wrong file name i get download.cgi
i tried doing http://www.domain.com/cgi-bin/download.cgi/myzip.zip and i
get the correct name but the contents dont look right any suggestions?
thanks.