To start with, I don't know what "it" is called. "It" referring to probably a software, Windows XP settings, etc. But let me try to illustrate. Let's say you're a participant in an exhibit and you've got a booth or something. Then you've got an interactive presentation, say on a laptop or desktop ofcourse, which could be anything from say an interactive slideshow, offline webpage, flash animation, etc. And ofcourse, you'd like visitors to your booth to, basically, interact with your presentation (you know, for people who might be too shy to approach you to begin with) and atleast gather more info regarding your booth's exhibit. Hence an "info kiosk" similar to those "Mall Directories", etc. or like the ones in airports.

Hence they should be able to use (at the least) your mouse (or any other pointing device) and/or keyboard so they can navigate through your presentation. BUT you wouldn't want your visitors to be able to access anything else in your desktop/laptop outside of your presentation. Like running a screen saver that doesn't go back to your Windows application once the mouse/keyboard is used. Ofcourse, except for a "secret" keystroke maybe, followed by a password.

So my question is how does one go about with this? What's needed? Software? If so, free open source software suggestions would be very welcome. Preferably for Windows XP.

TIA.