Flash chat app?

Anyone know any tuts/articles on making a chat app in flash 8? Iv’e looked at a few that might be possible running on my machine, but not much good running on my webhost when I don’t have that kind of access to get some server running on it just for the chat.

I’d prefer something that isn’t too heavy on bandwidth or resources, but as I said, I don’t have the kind of access needed to go installing third part applications or protocols to support this sort of thing.