adding advertising above the header

HI,
A client wants to be able to put advertising above the header on pages/posts For example on the following page:
http://www.homefrontmagazine.com/been-there-done-that-how-to-fight-feelings-of-complacency/

They would like the ad banner to be in the area above the "been thre done that" heading. We already have an advertising plugin. I just need to be able to put the shortcode in the area above the header. How do I do this?