How I did it in dial-up/ISDN land:
1. Get an account with www.dyndns.org or one of the similar free dynamic dns companies.
2. Get a router (or dust off an older Pentium I). There are lots of OTHER reasons to get a router also, but one is that your AOLserver doesn't have to notice when the IP changes. (Cheap used routers may be had via your favorite online auction house.) Tell your router to direct anything sent to port 80 (or 8000) to your web server.
3. Don't tell AOLserver what IP to listen on, or tell it to listen on 0.0.0.0.
You could probably skip steps 1 & 2 and JUST do step 3, actually. I'm just a big router fan, since I have 5 machines (six if you count the Audrey in the kitchen) sharing one dynamic IP.
:)
