Right off the bat I see you're missing the closing </iframe> tag. I don't know where it's supposed to go- either at the very end of the code you posted or right after:
Code:
<iframe id='a742f4ab' name='a742f4ab' src='http://www.smoked-meat.com/openx/www/delivery/afr.php?resize=1&campaignid=5&target=_blank&cb=INSERT_RANDOM_NUMBER_HERE' frameborder='0' scrolling='no' width='900' height='134' allowtransparency='true'>
I would double check wherever you got that code from.