MB> NetBIOS is a session layer protocol. 
                  ^^^^^^^^^^^^^
 MB> In order to get it to work at all, you have to run it over some 
 MB> transport layer protocol, 
     ^^^^^^^^^^^^^^^
Ah,  now things begin to become a little bit clearer...
Where I've been having a bit of a problem with some of this stuff is seeing 
where the different parts fit on the different layers.
 MB> and the most common one used for NetBIOS is NetBEUI. 
Is that an acronym for something?  Or that last part of it?
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