[PHP Header] Right-Click Download in Firefox showing php filename

I followed some of the examples that was on PHP header() http://us3.php.net/manual/en/function.header.php I am trying to have users download a file named 'Setup.msi', however under a PHP file with the sent header information, the default name to the user will be 'ApplicationSetup_v1_0.msi' -- I am sending the recommended header information in the notes. For example in my 'download.php': $forcename = "ApplicationSetup_v1_0.msi"; $filename = "Setup.msi"; header("Content-Type: application/force-download"); header("Content-Type: application/octet-stream; name=".$forcename); header("Content-Type: application/octetstream; name=".$forcename); header("Content-Transfer-Encoding: binary"); header("Content-Length: ".filesize($filename)); @readfile($filename); When I LEFT-CLICK the 'download.php' link in Internet Explorer 6/7 and Firefox 2/3, it defaults the download name to the variable that I want it changed to ($forcename). When I RIGHT-CLICK in Internet Explorer 6/7, it also works. However when I RIGHT-CLICK the link in Firefox 2/3, it downloads the file as 'download.php' and not the specified name and .msi extension (I can still rename to the .msi extension and it works fine). Am I missing another header or is there known issue for Firefox right-click "Save Link As..." and default the name to something else? Or should I contact Firefox on this to get more information to default the name to something different? Thanks -- William Frankhouser WilzDezign http://www.wilzdezign.com