You can also explore the code of our Silverlight 4 main sample application (that should be installed along with the controls). There you can see an example of using RadRibbonBar and RadRichTextBox in a more sophisticated scenario.
All the best,
the Telerik team
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Public Issue Tracking
system and vote to affect the priority of the items.