Adding C++ SDK to existing c# project in visual stuidio 2010

Hi sir,

         I'm just creating a windows forms application with c#.Net as front end and sql server as backend.The application is
mainly concentrated on token calling.Token generation and token calling has been implemented successfully.In the remaining
part, I want to show the token number on a LCD screen which will be connected through the hdmi port in the system.I'm using
AMD Radeon Graphics.So i have downloaded the SDK from :http://developer.amd.com/tools-and-sdks/graphics-development/amd-radeon-sdk/#downloadsamples

The SDK was developed in c++. I am unable to implement this SDK with my existing C# project.Can anyone please help me to
find a solution for this problem.any help will be appreciated ,

                                                                            Thanks in advance.