The Simple Pull Quote WordPress Plugin provides an easy way for you to insert pull quotes into your posts and pages.
To change the look of your pull quotes, open your theme's "style.css" file and create a CSS class called "simplePullQuotes". Edit this class according to your tastes. IMPORTANT: Make sure your theme's "wp_head()" function comes before your theme's stylesheet or else this won't work.
Simply select the text that you want to use as a pull quote and click the "Pullquote" button in either the visual or html editor.