Assuming you mean this provider:
http://usenetserver.comName the server as you like and set Server address:
news.usenetserver.com
And any of the following Ports:
20,23,25,119,
3128,7000,8000
9000
Or for SSL use:
secure.usenetserver.com
And any of these three Ports: 443,563,8080
Check the box saying authentication and put in your login data.