You're using the second version, right? You need to open up the sc_serv_basic and fill in your information regarding port numbers and such. To register your server with SHOUTcast.com, open up sc_serv_public and apply your key in there.
After you've finished applying your info, go ahead and include your configuration file with your server launch file. If you only filled out the sc_serv_basic file, then include that only. If you filled both the basic and public files, then only include the public file.
I'm not sure how to initiate the command for launching the server with a config file, since I specialize in the linux area.
I hope this helped.
