I have successfully found something similar to a Discussion Forum. It is a chat box developed by cbox. You can make your own by going to the cbox website. It is under the Recent posts Gadget and above the Feeds gadget.The chat is also live so if one person in the US is typing and someone in NZ is typing they will see it update in realtime (to be tested). There is also an update button.
The Blog Author :)
