How to place Cpxinteractive ads code in phpbb forum?

I want to place cpxinteractive banner ad in my phpbb forum. I got the ad code in "iframe". But for some reasons i cant use iframe in phpbb forum. ie. when i place the ad code, it displays blank page. Im using phpbb 3 version.
If someone has experience with placing cpxinteractive code in phpbb forums, please help me. I shall be so much thankful to you.
Ps. phpbb support doesnt seem to help about this issue.

 

What does the code for the cpxinteractive banner look like? I have some custom content in my phpbb3 install, and might be able to help you.

If it uses javascript, you need to put the {literal} bracket before the code, like this:

{literal}
<script type="text/javascript" src="http://www.yoursite.com/script.js"></script>

Code (markup):

Just post the code here and I'll tell you how/where to insert it...

 

thank you very much for your reply.
the code looks like this

Please help how i can pleace this code.
thanks

 

http://www.phpbb.com/kb/article/advertisements-in-phpbb3/

 

thanks but i did same thing and still doesnt work. it works fine if theres any other type of code except iframe. i dont know whats wrong with iframe