Hi Greg Duffield,
Thanks for your question.
We do not provide an equivalent control for Silverlight that corresponds to RadRotator and its ability to display news headlines. Our RadControls for SIlverlight bundle features a RadCoverFlow control
, however, it can display only media files.
You can consider using an ItemsControl and a Scrolliewer to accoplish your task. For more details you can check http://silverlight.net/GetStarted/
the Telerik team