[Lynne]

Sure, just use a plugin to do a str_replace. I think I've written the code for this quite a few times - here's a copy from another thread:

PHP Code:

$word = array(
'word 1',
'word 2',
);
$link = array(
'xxxx',
'yyyy',
);
$this->post['message'] = str_replace($word, $link, $this->post['message']); 


It should work in vB4, I think.