Dave,
The dial in part is pretty easy to setup. The part that most poeple are not able to do is giving access to whoever dialin the server the Internet browsing service.
Very usefull if your behind a corporate LAN and you do not want everybody knowing where you surf the net. You just have to dialin to your own server at home with a mode and browse the Internet from there.
If anyone as done it we should be able to get an answer from this board.
This is also helpfull if you want to supply Internet to friends because with your server/firewall already set to masquarade you are using the other server behind this firewall wich is already getting service on port 80 in dhcp.
Peter Side