Space between the header and sidebar.

Hello, first post!

I have a test site that I am working on with a space problem between the header and the sidebar.
You can see it here http://seoplannow.com/un-linked/problem_page1.jpg

I am using WP 3.01 and Atahualpa 3.5.3

I want the header to move down, so there is no gap.

Thank you.