Although it is possible to 'uncheck' the option during installation of a freeware, sometimes you could end up with one or more of these unnecessary add-on programs and experience some difficulties removing them.
In such a situation the T-Tools' Antiseptic can help you. Currently it can remove every last traces of AOL and AIM Toolbars from your computer.
The program is free from viruses and can be downloaded from here. It works on Windows XP, Vista and Windows 7 (required .NET framework 3.5)