Unix networking to DOS

[John Tompkins]

Has any tried using any UNIX <--> DOS networking (using primarily DOS type
networks, not TCP/IP)? SCO sells Xenix-Net that claims to be compatible with
the DOS NetBios and "MS-DOS based MS-NET derivatives". So whats a MS-NET 
derivative? There is one DOS product, Via-Net from Western Digital I am
interested in (there is a hardware product that comes with it). Can Xenix-Net
talk to it at a NetBios level? Interactive 386/IX has ViaNet available for
it but maybe not on the hardware card I must use (ARCnet). I only need
interprocess communications for user developed programs, no "networked 
DBase III" or the like. Would it be as easy (and faster running code) to skip
the ViaNet and go straight to NetBios? Can I get Xenix-Net running or ARCnet
hardware?

OK, question two. I also want to talk to a VAX/VMS host on DECnet using a 386 
type UNIX/Xenix. I have memorys of DECnet running on straight "System V" 
(not ULTRIX or SUNs) from some company. Anybody know what I'm talking about
or better yet used it?

Any help would be appreciated. Thanks.