I am trying to protect my application with a password protected screen-saver.

I have 2 options:

1. I created a program covering the screen and password protected and I used SystemParametersInfo API function to disable the fast switch keys (CTRL+ALT+DEL ALT+TAB etc). This is working fine in Win95,98,ME but in XP or Win2000 this function CANNOT disable these keys. The question is how can I disable the fast switch keys IN XP(Win2000)?

2. To call a customized screen saver from a command line like this: C:\Windows\System32\sssstar.scr . The only problem here is how can I make this call to start the screen saver in a password protected mode in XP and Win98? And in WIN98 how can I programatically change the screen saver password?

Thanks,
Vali