Need to create a silverlight control that can read/write to the the client machine's registry. I am very aware of the security implications however a means to uniquely identify the client's machine is required and our clients are willing to agree to install any full trust component that's required to achieve this. How do I go about creating a silverlight control that asks the user to confirm installing it in full trust. It needs to be inbedded in the browser NOT STAND ALONE as Javascript must have access to the trusted data.