Magnolia`s very customizable but ...oh yeah you can ad 468X60 ad banner...just goto EDIT HTML and find "Adsense"

Browser will highlight the following code:

<div class='header-data2'>
<!--PUT A BANNER OR ADSENSE HERE-->
</div>

Just replace <!--PUT A BANNER OR ADSENSE HERE--> with your adsense code.

*PSSST this feature is optional and BETA, you can try it to see if it works for you. Let me know if it doesn`t. I may fix it up!:D