As described in this blog post, a new version of the Windows Vista Media Center SDK was recently released. That version of the SDK contains a new C# project template. I just noticed a couple of new post on the Media Center Sandbox blog that describe some useful modifications that can be made to this project template in order to create different types of Windows Vista Media Center applications:
- Creating a Windows Media Center background application - http://blog.mediacentersandbox.com/CreatingABackgroundApplicationFromTheTemplate.aspx
- Adding the button from the Z sample application to a new project - http://blog.mediacentersandbox.com/AddingTheZSampleButtonToTheApplicationTemplate.aspx
I encourage you to check out these posts to see step by step instructions for these customizations that can be made to the standard Windows Vista Media Center SDK project template.