Anyone familiar with Coovachilli? Got a Security Warning when using IE on client machines. Would like have a http login page, not https.

I got a machine with Ubuntu 10.10 and decided to make it a Wi-fi hotspot (Coovachilli). I browsed the Internet and found a good tutorial here: <[login to view URL]> I was able to get it up and running. However, client machines with IE browsers render a scary message saying: "There is a problem with this website's security certificate" I know users can easily proceed by clicking at Continue to this website (not recommended), but I'd rather the request was sent as a non-ssl one. I googled online and someone suggested me to open /etc/chilli/config and replace HS_UAMFORMAT = [https://\$HS_UAMSERVER/uam][1] with HS_UAMFORMAT = [http://\$HS_UAMSERVER/uam][2] After the modification, the client machines can never again get to Coovachilli login page. They are told that the page cannot be displayed. I believe this should be very easy for someone familiar with Chillispot or Coovachilli