In my "Systemsteuerung" (I don't remember what's the English name for this) I have an Applet called "Directx" . I downloaded it once from Microsoft, I think, but I'm not sure anymore. It might be that it ships nowadays even with the current directx package.
There, on the page "Directdraw" , there is an option "enable PrintScreen key".
I can send an screensot of that via e-mail. PM me if you want it.