This plugin adds a code button for WordPress CKEditor which helps to type or edit tag for Alex Gorbatchev's SyntaxHighlighter.
To give the pre tag a special style in the visual editor, go to "CKEditor->Advanced Settings", set "Editor CSS" to be Define css, set "CSS path" to be http://yourdomain.com/wp-content/plugins/syntaxhighlighter-ckeditor-button/ckeditor.css. Please replace yourdomain.com with the real path of your "WordPress Address" defined in "Setings->General".
Save the settings and enjoy.
Note: If you encounter any problem after upgrading please clear your browser's cache.