Please feel free to borrow, steal, abduct, and/or torture the documents contained in the Layout Reservoir. Though you need not give credit to BlueRobot.com, a comment in your source code would help other developers to find this resource. Enjoy.
A simple two column layout with the standard left-side menu.
Practically the same HTML as 2 columns - left menu, but with a different stylesheet.
Three columns, no tables, intelligent order of elements. What more is there to say?
Many a talented web designer has struggled with CSS-based centering. Though CSS vertical centering eludes us, two techniques for horizontal centering are BlueRobot approved. Take your pick: Auto-width Margins or Negative Margin.