[Simon Lloyd]

Yep, create a plugin using postbit_display_complete as the hook and drop this in

PHP Code:

if ($post['postid']==$this->thread['firstpostid'])
{
if(strtotime($post['postdate'])<strtotime('-180 days')){
        $post['message']= $post['message']."<br /><img src='images/misc/MyGif.gif' border='0' />";
 }
} 


--------------- Added [DATE]1354209585[/DATE] at [TIME]1354209585[/TIME] ---------------

Changed text for image in the above