I have replaced the old shitty Cbox with a "new" sort of chat box called SayBox. It's recommended by a lot of people on ProBoards and its administrator panel is really good and handy. Here are all the features (I've just upgraded it, so all those upgrade features are applied): www.saybox.co.uk/index.php?page=features#upgrade
Admins gets a red mini-avatar, co-leaders gets a cyan avatar, I get a purple mini-avatar because I'm simply the best. Admins are also able to post whenever they want while others must wait 20 seconds between each message to avoid spam. From now on, everyone may also edit or delete their chat box message. Just remember to behave appropriately and don't post anything stupid. You might get banned.