First a little background info on the problem:
My kiosk application must block user access to the computer by putting up a full screen image blocking all windows and the desktop. Users must not be able to get around this block. I can easily do this by putting a full-screen window up, OR by creating a new "virtual desktop" and switching to it. This is the easy part. Let's call this up front image/window/desktop THE BLOCKER.
What I need help with is allowing a remote desktop user or VNC user to operate the machine behind the BLOCKER, hidden from the user standing in front of the machine. I do not have a video switch involved (although if there is a cheap one that is remote controllable I might be interested...I need 12 of them). What I really want is a software solution.
VNC clients only show the current input desktop and do not have the option to ignore certain windows (the BLOCKER), so they don't seem useful for this. I do not know if RDP allows you to log in to a hidden desktop or if it can operate behind THE BLOCKER.
If anyone knows how this could be accomplished either via commercial software or knows of a software library that does something like this (we use .NET as our dev platform), I would appreciate the help.