Beeman, I haven't given up on you! I have been looking around and trying to find something that may help.
I'm just a little covered up at the moment and can't spend the time. But I don't want to have you run away cuz you can't get in. I know everyone would love to meet you in the chat room!! We like new folks a lot. We need more brains in there. That's for sure!!!
The message you are getting does suggest that you are being blocked from the server though. The chat server is external from the Beesource server.
You can open the java console and see if the applet is loading from sigmachat. I kinda doubt it? You can get to the console in IE7 from the tools menu on the right side of the toolbar.
There are many places that can be blocking you, as ZA does mingle with application settings as well. Or used to I should say. Please don't think I'm bashing ZA. They are quite trusted by many folks!
"Success is not final, failure is not fatal: it is the courage to continue that counts." Winston Churchill