Thanks for writing and for chossing RadControls for Windows Phone 7.
The scenario that you would like to have sounds reasonable and we will consider your feature request for our next official release after Q3 2011 (since we have already started preparing our final build for this release, we will include this feature in Q3 2011 SP1).
As for RadListPicker, if I understand you correctly, you can use the PopupHeader
property to define a header for the popup.
Let me know if you need further assitsnance here.
I have added 800 Telerik points to your account for this feature request.
the Telerik team
Explore the entire Telerik portfolio by downloading the Ultimate Collection trial package. Get it now >>