Question:
How do I launch a control panel applet?
Answer:
You can launch a control panel applet by calling WinExec 
to execute control.exe, passing the name of the control 
panel applet as a command line parameter. Applets files 
(.cpl) can be found in the Windows system directory. Note: 
Some of the applet files will not be found in the Windows 
system directory. Those applets can be executed simply
by name.
Example:
procedure TForm1.Button1Click(Sender: TObject);
begin
 WinExec('C:\WINDOWS\CONTROL.EXE TIMEDATE.CPL', 
 sw_ShowNormal);
 WinExec('C:\WINDOWS\CONTROL.EXE MOUSE', 
 sw_ShowNormal);
 WinExec('C:\WINDOWS\CONTROL.EXE PRINTERS', 
 sw_ShowNormal);
end;