Thank you for writing.
I understood that you have contacted a colleague of mine via other support channels and should already have answered your query. However, I will post the answer here so other people can benefit from it too.
To change the current frame of a live tile, you can set the CurrentItem
property as follows:
The Items collection holds the frames of the live tile. And, the CurrentItem property should be set via code, for example, when the form loads. The above line of code is taken from the DemoAppsHub example whose source code you can find under "<install directory>\Telerik\RadControls for WinForms Q2 2012\Examples\DemoAppsHub".
Feel free to ask if you have any further questions.
All the best,
the Telerik team