Expires Headers

[int33h]

Hello,
I'm trying to add the Expires header to some of my static resources however it looks like neither mod_expires nor mod_headers modules are not loaded. Is there a reason why these are disabled?
If not, could you please enable the mod_expires module?

Thank you

[int33h]

While waiting for an answer I decided to try another solution that involves AddHandler and php_value auto_prepend_file directives in .htaccess that looks like

CODE

<FilesMatch "\.js$">
    AddHandler application/x-httpd-php .js
    php_value default_mimetype "text/javascript"
</FilesMatch>
php_value auto_prepend_file /path/to/expire-handler.php

And expire-handler.php looks like

CODE

<?php
$maxage = 60 * 60;
header("Cache-Control: max-age=$maxage,public");
header("Expires: ".gmdate("D, d M Y H:i:s", time() + $maxage)." GMT");
?>

However that doesn't work and I'm getting a 500 error in .htaccess.
Looks like the restrictions for htaccess are too severe.

I consider that controlling the cache settings for site resources is pretty critical. How difficult is to enable mod_expires?