I've recently run across the rather nice (if GTK based) free and OpenSource
network protocol analyzer "Ethereal" (www.ethereal.com) which knows how to
decode virtually every network protocol except of course NS/VT, so I just
thought I would point out (nudge nudge) that if someone with more knowledge
of the VT protocol than myself wanted to write a decode module for NS/VT for
Etherial, that would be very cool.

G.