diff -urp editors.orig/ckeditor.inc editors/ckeditor.inc
--- editors.orig/ckeditor.inc	Mon Jan 17 16:16:08 2011
+++ editors/ckeditor.inc	Mon Jan 17 22:32:35 2011
@@ -181,6 +181,10 @@ function wysiwyg_ckeditor_settings($editor, $config, $
     }
   }
 
+  if (!empty($config['css_classes'])) {
+    $settings['stylesSet'] = wysiwyg_ckeditor_get_styles_set($config['css_classes']);
+  }
+
   if (isset($config['language'])) {
     $settings['language'] = $config['language'];
   }
@@ -332,3 +336,18 @@ function wysiwyg_ckeditor_plugins($editor) {
   return $plugins;
 }
 
+/**
+ * Return an array for JS of custom Font styles
+ */
+function wysiwyg_ckeditor_get_styles_set($css_classes) {
+  $lines = explode("\n", $css_classes);
+  foreach ($lines as $line) {
+    $l = explode("=", trim($line));
+    $lc = explode(".", $l[1]);
+    $style['name'] = $l[0];
+    $style['element'] = $lc[0];
+    $style['attributes']['class'] = $lc[1];
+    $css_styles[] = $style;
+  }
+  return $css_styles;
+}
diff -urp editors.orig/js/ckeditor-3.0.js editors/js/ckeditor-3.0.js
--- editors.orig/js/ckeditor-3.0.js	Mon Jan 17 16:36:29 2011
+++ editors/js/ckeditor-3.0.js	Mon Jan 17 22:19:19 2011
@@ -24,6 +24,9 @@ Drupal.wysiwyg.editor.init.ckeditor = function(setting
         }
       }
     }
+    // Register Font styles.
+    var wysiwygSettings = Drupal.settings.wysiwyg.configs.ckeditor[format];
+    CKEDITOR.stylesSet.add('custom', wysiwygSettings.stylesSet);
   }
 };