There is a third party product that does exactly what you are looking for.
It is called Transarent Screen Lock Smart Card.
You can download it from http://www.e-motional.com/TScreenLockSC.htm
"foreigner_2103" wrote in message
> I want to immediately start the screen saver when a user locks the
> (through CRTL+ALT+DEL or Smart Card Removal - no new shortcut) - is there
> way to do it? Not just be setting the normal screen saver time to
> low, somebody could work on such a computer.
> The overall goal is to lock the computer but still display its screen
> content using a transparent screen saver.
> A really appreciate your help!