NT Screen Saver Lock

I have created a screen saver in VB, and I would like to force NT to demand the user's name and password (using the standard name and password screen if possible) if the Password box is checked, like all the rest of the NT screen savers do. ("This workstation is locked and can only be unlocked by %username% or an Administrator...")

I've looked all over but to no avail. :\

Any help?

Thanks in advance,
Conrad

Have a look at the JDSaver example at
http://www.arcatapet.com/vb.html