Drupal theme layout - recommendation based on example needed
If it were me I'd start with Bartik and go from there.  It's very solid and flexible.  It has the main elements you'll need.

But that's just me.  Take a look at http://drupal.org/project/corporateclean

If you are looking for something extremely quick and easy, your best bet is just browsing the different template websites that offer Drupal designs.  These have some themes similar to what you're looking for:


http://www.templatemonster.com/drupal-themes.php
http://www.themeshark.com/
http://fusiondrupalthemes.com/
http://www.sooperthemes.com/drupal-themes