Video for RS232 or any relevant documentation

Hello all,
I have a working IR and Relay set up thanks to the video on your blog.
(the relay was easy)
We would like to use the serial port for communication with the denon in
this rig: www.vandermehrn.com/lc
Need to get 2 way feedback so that one can see current volume and so on.
Is this possible? Are there any example gui files out there? (fully
populated remote that uses all hardware features of gc100)

Also
As I am using the relay for a sompfy screen I need to create a screen up
and screen down button.
Is there a way I can do this with just on button which closes the switch
on toggle and closes another switch on release?
In other words can I have independent commands on toggle and release?

Using the following
GC100-12
Conrolfx and Iviewer 2.2
Ipod Touch

P.S. any pointers would be very much appreciated . . .

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