How to add an icon in control panel

You need to create a file with the extension .cpl that will go in the windows\system32 directory. This file is actually a dll with a specific interface, a description of which can be found in a decidedly old copy of the Windows System Journal. The example is in C++ but maybe you could write a wrapper to go around your C# code. I hope this help, if only to give you something to Google.

Regards

Ashley