[SOLVED] Need to Create a Single Post with No Ads at Top Header

I need to create a single post template which has no ads whatsoever.
I thought I could omit sidebars in "posts" but now it looks like that is only for "pages".

I have Added a New Widget which now contains my BlogHerAds leaderboard ad at the top of my site (previously I used "Add HTML/CSS Inserts" in the header section).

I have installed the WP Plug-in Single Post Template by Nathan Rice. I have created a new template using the instructions outlined by Paulae. That is all working fine.

But now I just don't know how to not have it see the leaderboard ad on that Single Post Template.

What I'm trying to do is create a single post page that has no ads whatsoever (on the sidebars or at the top) for paid reviews or for giving exclusive advertising rights to one company on single posts. BlogHerAds allows Google text ads, but no paid ads with images. I am not making enough money right now on blogging to give up BlogHerAds... so I would like to figure out how to do this.

I am using version 3.4.5.1 (version 3.6 completely breaks my blog so I will wait to upgrade). Thank you in advance.

UPDATE later in the evening: I am partway there. I have managed to get rid of the sidebars on one post, using Single Post Template... but still no luck getting rid of that leaderboard ad at the very top. Here's my test page with no sidebars: http://www.outofdebtagain.com/2009/01/test-ad-page3/

Mrs. Accountability
Out of Debt Again