Image in the Palette

I want to create a palette, in this palette all the nodes will have an image.
I try to implement by using the “OrgChart” example, but I am not getting how I will specify the image path, and where I will place the image?

As I am hosting the silverlight application in a website.

Just set the Image Source to refer to an image file on your server.

The BeatPaths sample demonstrates data-binding the Source to the node data using a converter to generate a full URI and return a BitmapImage. But there are other ways of getting the job done, too.