CKEditor SyntaxHighlighter plugin

Hi all; after visiting http://www.ramble.in/ckeditor/syntaxhighlight/
i have add the plugin, but after clicking the ok button in the dialog, it adds the pre tag with the associated class, but the display doesn't change, i would like see the SyntaxHighlighter in the wysiwyg mode and in the source mode, is it possible?
Thanks for all your answers.