procedure CreateExplorerButton(Path: string);
{©Drkb v.3(2007): www.drkb.ru}
const
 Tagit = '\{10954C80-4F0F-11d3-B17C-00C0DFE39736}\';
var
 Reg: TRegistry;
 Path1: string;
 Merge: string;
begin
 Path := 'c:\your_program_path';
 Reg := TRegistry.Create;
 try
  with Reg do
  begin
  RootKey := HKEY_LOCAL_MACHINE;
  Path1 := 'Software\Microsoft\Internet Explorer\Extensions';
  Merge := Path1 + Tagit;
  OpenKey(Merge, True);
  WriteString('ButtonText', 'ButtonText');
  WriteString('MenuText', 'Tools Menu Item');
  WriteString('MenuStatusBar', 'Run Script');
  WriteString('ClSid', '{1FBA04EE-3024-11d2-8F1F-0000F87ABD16}');
  WriteString('Default Visible', 'Yes');
  WriteString('Exec', Path + '\ProgramName.exe');
  WriteString('HotIcon', ',4');
  WriteString('Icon', ',4');
  end
 finally
  Reg.CloseKey;
  Reg.Free;
 end;
end;