Just a heads up: If ICQ (e.g. via Pidgin/GAIM) doesn't work then that is because AOL dropped support for older ICQ versions. Many clients using the ICQ protocol suffered from this problem. Some can easily fix it in config others need a patch in software. For Pidgin, you need new software, IIRC 2.4.3 solved it. But, if it isn't packaged yet you're out of luck.