Adding an item in 'my computer'

Hello,

I'm making an app that I would like to appear in My computer. It should behave
like the control panel or the dial up networking, that means has the Windows
window aspect, but with the items I add in, and so ... I looked in the registry
and found that I will have to get an entry in the HKEY_CLASSES_ROOT (like
{112255-12565654-15646546} ) and that's all I found. Could you tell me where to
find informations about that?

Thanks a lot

Thomas