I was playing with this a few weeks ago. It's a shame it doesn't support mouse or keyboard.
Taken from their main webpage:CHARVA now also has mouse support on terminal-emulators that report mouse events, such as "xterm" and "PuTTY <http://www.chiark.greenend.org.uk/%7Esgtatham/putty/>"
Actually, I might have misunderstood you, because if it did not support mouse _nor_ keyboard, how would it work at all?
Daniel