You're pretty much wasting your time with that. I tried hooking up my 5215CD to AOL when I still had my account with them prior to switching to high speed via a 56k external modem, and although I was able to connect after several attempts, you are extremely limited as to what you can access since the old HTML formats are no longer recognized, and it's downright slow even when you do have a stable connection.
Besides, AOL hasn't supported the Mac platform for awhile, which may lead to some unnecessary complications. I recall receiving a dialog box stating that I couldn't log on (or the connection timed out) because AOL no longer supported Mac software versions, so I had to reboot, and try again.