Hey there Mountman!
I think your links are incorrect. I clicked on the link you had in your message today, and I see your ISP as "192.168.1.101". What you saw in the NCH guide is just an example. These are incorrect. You have to have a public IP in order for your stream to broadcast directly from your PC. As it is now, no one can connect with you to listen. They need to be able to connect with your PC to listen to what you're playing. I'm not much into all this, I had a friend of mine handle this. I honestly couldn't tell you how to do this mate. It's all too tecky for me. But once you do this, you'll have no problem. I was the same.
I'm sorry I can't be of more help. Try going to Broadwave NCH and read about getting your stream to work. www.nch.com.au/streaming
Cheers!