eeking a program

I've heard that there is a program that hides the desktop icons and disables CTRL+ALT+DEL, right click, safe mode boot (yes I found many that do that) and also prompts user to enter password once they click on the start menu or on the 'programs' section....basically I would like to secure the computer without it looking as it is secured...so maybe it even shows the desktop icons but once you click on them all you can do is select them not actually execute them, the taskbar would be still there but once you click on the start menu password prompt or something appears that would not list or allow the 'programs' to be seen or simply executed....

OR, I'm thinking of just allow it to boot, disable the desktop (hide icons, taskbar), the safe mode boot, CTRL+ALT+DEL, right click, etc and using some blue screen or some error many available error messages found on windows =) as the wallpaper..but most programs have the 'log in' prompt right there...is there one where you have to press a combination of keys together to bring up the login prompt?