This WP plugin creates one or more columns in your posts or pages. Easy styling with a complete set of generated CSS classes.
Creating columns is super easy, just include the column separator text in your page or post (by default /—/, configurable in the WP Column Settings page).
HTML code will be generated with various CSS classes so you can easily style the columns in your Stylesheet.
Info and Download at: http://wordpress.org/extend/plugins/wp-columns/