Hi,

NCP is Novells proprietory protocol for accessing its servers,
it covers file access, printing, admin etc.

SMB is Microsoft's equivilent which I don't know much about; however
the Plan9 to-do list on the wiki has comments about possible sources
of an SMB/CIFS clients and a server.

-Steve

PS. part of the confusion may be due to the Netware "shell" (TSR)
used under MSDOS provides a NetBios client as well as a Novell one.