Hi and welcome to Visual WebGui!
Our framework isn't just a set of DLLs. And it would not run this way, there is more to configure. If you're using Visual Studio for development you should install our product and create "WebGUI Application" as new project (you will see it on the bottom of available templates). You can also see this article to see how you set-up a WebGUI project without project templates.
If you have more questions, we will be glad to answer.
Arseny Slutsky
The Visual WebGui team