DN> Does anyone know of, or has written a Ruby extension implementing the
DN> ZModem data transfer protocol?  Alternatively, does anyone know of a

Zmodem!  wow, you just put me in the wayback machine.  As others have
said: The guys at http://www.omen.com/ are the zmodem gods.  I didn't
even realize x/y/zmodem were even used anymore.

-joe