are you saying that you couldn't find netbeui where the currently running protocols are (control panel, network)?
if you need to, you should be able to hit the ADD button below the list of currently running protocols, then select protocols, then go to Microsoft, and select netbeui.
you shouldn't need to run netbeui though (it adds to network congestion).
what you should do is have only the IP protocol running, as well as the correct adaptor (for your network card), and a Client of some sort (MS networks, Novell or something similar) installed. then you enable a firewall at the point of entry for the internet, and enable file and print sharing should then be enabled, and it *should* work, unless I forgot something.