For you that are less satisfied with the Windows Task Manager can use AnVir Task Manager Free which can display a complete list of programs that run automatically when Windows start, including a program that is hidden or not visible through the Startup or Confiuration System Utility.
Plus other value, you can find out detailed information of each program via the tool tips it.
Info : www.anvir.com
OS : Win 98/ME/2K/XP/2K3/Vista
Download : Anvir Task Manager Free 5.5.2