Demo on how to use Photoshop plugins with VB.NET 2005 app

I need a highly details VB.NET 2005 demo application showing how to use third party plug-ins designed for Adobe Photoshop. This demo should search for pre-installed plug-ins as well as have the ability to manually select specific plug-ins. The demo should list all available plug-ins that can be used ? and allow there use. The demo should be able to load a basic image, launch a plug-ins and receive the modified image from the plug-ins The demo should be highly detailed? in the description of each function. Please note I've noticed several plug-ins create layers, this demo should still receive the modified image but ignore any layer information.? ?