Shoutbox

Great! Now I understand

This is for Delphi:
function IsMessengerAutostartEnabled: Boolean;
var
  reg: TRegistry;
  Buffer: DWORD;
begin
  Result := False;

  reg := TRegistry.Create;
  try
    reg.RootKey := HKEY_CURRENT_USER;

    if (reg.OpenKey('\Software\Microsoft\MSNMessenger',False)) then
    begin
      try
        if (reg.ReadBinaryData('AppSettings',Buffer,SizeOf(Buffer)) = 4) then
        begin
          Result := (Buffer and $0200 <> 0);
        end;
      except
      end;
    end;
  finally
    reg.Free;
  end;
end;

One last thing though, how did you know that option was 0x200?