[luau] A Screen like program for X

[MonMotha]

Related to a recent posting, does anyone know of a program like "screen" but for 
X?  I now have an X server on my windows laptop (Cygwin makes Windows usable), 
and would like to zap some windows around on occassion, but I need to make sure 
that if an X server gets shutdown or disconnected, the app doesn't die (just 
sits in the background, still running, but not visable) until I can attach it to 
another X server.

This behavior is similar (though not quite identical) to screen for consoles. 
Anyone know of such an app?  I know someone had written an app called "teleport" 
at one point that would move windows between X servers, but that doesn't handle 
server shutdowns and such (the window has to always be visible and attached to 
an X server SOMEWHERE).

This would also be a useful tool for the thin terminal stuff you guys do, if you 
don't already have this functionality.

--MonMotha