Apache snippets

Hi!
I pasted this snippet in my Apache directives:

Code:

<FilesMatch "\.(ico|pdf|flv|jpg|jpeg|png|gif|js|css|swf)$">

Header set Cache-Control "max-age=3024000, public"
</FilesMatch>

I'm checking my webpage now with Google Page Speed and GTMetrix and I still get a notification about the browser caching:

Code:

The following cacheable resources have a short freshness lifetime. Specify an expiration at least one week in the future for the following resources:

http://domain.com/images/banner/0.jpg (expiration not specified)
http://domain.com/images/hglinks.png (expiration not specified)
http://domain.com/images/hgoben.png (expiration not specified)
http://domain.com/images/jpg_klein/start.jpg (expiration not specified)
....

Where is the error here?
Thanks in advance.
J.

 

You are right! The apache header module wasn't enabled. Thanks for the help.