Tom, there are some known recurring problems with AOL but if I recall you are an MSN user (please let me know if that is wrong!).
Have you changed any of your system settings or installed any new software between the last time to sucessfully logged in and now?
Occassionaly users with problems like your's have been able to fix it by deleting the "cookies" in their WWW browser so you might want to try that as a first step.
And if you have more problems and need to contact a Moderator you can do it by just posting in the "Help" forum as you did here (you can continue using this thread for now). If things are really desperate open this thread and click on one of the "Report" icons with the red check and type your problem into the box that pops up. That'll send an e-mail to each of the Moderators.