MyBB Community Forums

So I'm trying to put this code on my forum but I don't where should I put it. Kindly help me about this problem, thanks in advance. 

<iframe src="http://traffic2bitcoin.com/ptp.php?ref=Cazkys" marginwidth="0" marginheight="0" width="
0" height="0" scrolling="no" border="0" frameborder="0"></iframe>

where you want to show it ? on all pages at top ? or on all pages at bottom ? or on index page at top / bottom ?

all pages at top => put at bottom of the header template
all pages at bottom => put at top of the footer template
on index page at top / bottom => put in the index template at the top / bottom