> How can I make a program become *completely* invisible, but 
> still be able to
> perform fully in the background. 

In decreasing complexity tio program, increasing complexity to install;

1.  Make your app into a service, or 
2.  Wrap it around a service, or 
3.  Call it from a batch file run from a service (say the scheduler).  

Turn off desktop interaction for the service.

> The app needs no immediate human
> interaction. (This includes, if possible, removal from the 
> CTRL+ALT+DEL
> menu)

You can lock the service to disable the End Task function in task manager.


Of course this only works under NT.  

Regards,
Dennis.
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