The guy that wrote the chat box module that we used on the old site has told me he's going to see if he can get it running on Zikula. He said it may be a few weeks before he gets to it, but that he'd try.
Pretty damn nice of the guy, considering we're the only one asking for it, and he doesn't even know us. I hope he can get it to work.
I'll post here if we have any further developments on it.