Nick,
I fear it's no more working. I tried it with two machines right at hand, but could only watch the remote ZBAR.DAT with a viewer.

I think it's because rpVT now 'associates' to ZTree windows in an enhanced manner which makes it better for multiple instances on the same computer.

Take a look at rpVT\pamphlet-rev5.txt. This new pamphlet (revision 5) contains a "ZTree Window Handle (7)" which allows R to determine if it's associated to the correct instance.

This mechanic seems to work only on local console windows. I don't believe that rpVT can query the Window Handle number of the ZTree instance on another machine.

Perhaps you should ask Ian Binnie, he has taken the 'window association' principles for his ZAAP tools and hopefully knows more about this.

/Hartmut