Undo Ignore from Right-Click

[RosePhoenix]

It says "to ignore further items, right-click 'ignore further detections of this product.'"
I did so, but I changed my mind. How do I undo this?
Oddly enough, it is still detecting things such as MS Paint recent file list, but NOT detecting Macromedia Flash Cookies (either because I deleted them all and there truly are no more) or there is some sort of glitch that made it think THAT is what I wanted to ignore. Help?

[Zenobia]

If you're using Spybot 2.1,try opening Spybot-S&D Start Center,checkmark Advanced User Mode,click Settings(say Yes to the prompt from UAC,if applicable),go to the Ignore Lists tab.Anything you've rightclicked to be ignored is probably under the Items tab,though you can look at the Programs tab,too,to be sure.Click your mouse on anything you'd like not to be ignored anymore,hit the Remove button.When you're done removing everything you don't want in there,click Apply and then Ok.