And if that doesn't work. That means that it is embedded somewhere in your registry and you will have to go hunting or get a program like System Mechanic (www.iolo.com
) to remove it.
And a good place to start looking is when you first boot your PC. Leave the pop-up open, open your task manager (usaully Ctrl+Alt+Del will get you to it [ XP and 2000 you can use Ctrl+Shift+Esc to directly open it]) find the application, highlight it, then click "go to process" and it should show you what is making it open.
Hope this helps.