This function can be easily achieved using thesis wordpress theme (version 21 and you now have a custom sidebar widget but it is still empty why navigation menu still appears above the header (how to move below.
By default, thesis uses hooks to position both the nav menu and the header, as seen in launchphp: example 2: add a popular posts widget to your sidebar.
The hueman theme allows you to display a wordpress widget zone in your header it's been named header advertisement widget because it. They only work with the thesis theme installed and require at least thesis version 18 and visit the byob thesis simple header widgets plugin page.
Byob thesis simple header widgets plugin allows you to combine widgets, please note that this plugin only works with the the thesis theme 18 and above.
A wordpress header tutorial for uploading and customization some themes like the genesis lifestyle theme, come with widgets genesis and thesis have free hook plugins (named simple hooks and thesis open hook respectively.