How do keep certain programs from starting up automatically when I reboot my computer?

I have a laptop running Windows 7. IIRC, under earlier versions of Windows there used to be something like a “Startup” group where you could designate programs or applications that you wanted started up automatically upon reboot. If you did not want it to start automatically, you could delete it from the list.
However, I do not see where I can do this in Windows 7. Can anyone help?