How to find a theme like this?

I would page through the available GPL themes on drupal.org first and see if you can find one that comes close to what you're looking for.

Alternatively, you could start with one of the started themes (i.e. zen, framework, basic, hunchbaque, etc). Most themes have primary links and sidebars builtin.

_{===
"Give a man a fish and you feed him for a day. Teach a man to fish and you feed him for a lifetime." - Lao Tzu
"God helps those who help themselves." - Ben Franklin
"Search is your best friend." - Worldfallz}