Page content title

Hi folks
I was wondering if anyone could help me out. I’m tring to change the title at the top of the backend page when selecting a menu item in the dashboard. For example if I select posts from the dashboard menu on the left I get a heading within the main backend area saying post with an icon to the left.

For the sake of argument how would I go about changing this title to say cuckoo for example.

I’ve looked in the admin.php file as highlighted in firebug, but cannot seem to find where this h2 title element is.

Any help greatly appreciated

Graffig