Kurt,
The best way I know to run an application with disabled CTRL+ALT+DEL, Windows key, the Start Menu and the Task Manager is to start it on a separate Windows Desktop (still on the same computer :).
The price you pay is having a launcher -- a short VFP code compiled in exe. This launcher starts your main VFP application.
What exactly happens. The launcher creates new Windows Desktop, switches to it and starts your main VFP application on this desktop.
The new desktop, not like the default one, has no Start Menu, no Task Manager, does not respond to CTRL+ALT+DEL. No TAB switching to other applications and so on. The desktop is totally empty.
When your main application finishes, the launcher restores the original desktop. If your main application freezes, yea, then you should pull the cord out.
Foxpro code sample (requires membership)
How to prevent users from accessing the Windows Desktop
and from switching to other applicationshttp://www.news2news.com/vfp/?example=492