UltraVNC

In dealing as a remote Client, who is helping and teaching a non-PC-aware person, I would find it useful to give the Server conrtol of only the mouse, or only the keyboard, in certain circumstances. I want to be able communicate with the Server operator for instance, and have them able to reply, but ...

When working with UVNC to control another machine, if I am not in Fullscreen View, it quite easy to click the Close (top right hand corner) cross for the entire session rtaher than a maximised window with9n the session.

Is it possible to catch that and ask for cinfirmation before actually closing ...

I was wondering if it's possible to have a system, using direct MODEM->MODEM over the phone lines, not Internet, to toggle between Voice talk and Data/Control.

Sorry if this is a repost. I thought I had posted, but could not find my post by Search.