Some additional info:

1. Ctrl-Alt-Del is not currently supported. I'll provide a way to send this key sequence in the next release or the one following it.
2. There are no inputs supported from the command-line. The only way to specify a VNC server is to use the GUI.
3. You'll need to use one of the various ways to connect to a network before using vncviewer. I'll address this in the next release or the one following it.

Aaron