What parameter do I pass to rundll32.exe to bring up the "system" dialog in XP (the one with info on your system, performance controls, device manager, etc etc in it)? I'm not running explorer as my shell so the normal Win + Break key combo doesn't work. The shell I'm using has the ability to map anything to any combination of keys - so all I need to know is the parameter and I'm home free. The shell concerned, if anyone's interested, is called Aston (http://www.megla.net/desky.jpg if you want to see what i've done with it). You have to pay for it, but I like it.