CLSIDs Which Come Built Into Windows:

Desktop: {00021400-0000-0000-C000-000000000046}
My Computer: {20D04FE0-3AEA-1069-A2D8-08002B30309D}
Control Panel: {21EC2020-3AEA-1069-A2DD-08002B30309D}
Recycle Bin: {645FF040-5081-101B-9F08-00AA002F954E}
Fonts: {BD84B380-8CA2-1069-AB1D-08000948F534}
Dial-Up Networking: {992CFFA0-F557-101A-88EC-00DD010CCC48}
Internet Explorer: {fbf23b42-e3f0-101b-8488-00aa003e56f8}
Network Neighbourhood: {208D2C60-3AEA-1069-A2D7-08002B30309D}
Inbox: {00020D75-0000-0000-C000-000000000046}
Printers: {2227A280-3AEA-1069-A2DE-08002B30309D}
Briefcase: {85BBD920-42A0-1069-A2E4-08002B30309D}
The Microsoft Network: {00028b00-0000-0000-c000-000000000046}