How do I get rid of the AIM search bar in Firefox?

Somehow I’ve managed to get rid of Yahoo search bar, but I can’t figure out how to eliminate AIM.

It should be in Tools > Addons, either under extensions or plugins.

Hm. Don’t see it in either place.

Go to Start - Settings - Control Panel - Add or Remove Programs and see if you can remove it from there. That will uninstall it completely from your computer.