Help: a NS7 problem

Hi All How to fix a NS7 problem where it wants to add a .PHP extension to all filenames I try to use this funnction: function download ($fileDir, $fileName) { $completeFilePath=$fileDir.'/'.$fileName; header('Pragma: no-cache'); header("Content-type: archive/exe\n Content-Disposition: attachment; filename=\"" . $fileName . "\"\n Content-length: ".(string)(filesize($completeFilePath)) ); $fd=fopen($completeFilePath,'rb');

     while(!feof($fd)) {
         print(fread($fd, 4096));
         flush();
     }

} MSIE6 works perfect but NS7 adds .php extension when I try to force NS7 to download a file. How to fix this problem Thanks for help ... Oleks