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I have a Microsoft Natural Ergonomic Keyboard 4000, which has five "My Favorites" buttons along the top-center which can be programmed. Using IntelliType Pro (software downloaded from Microsoft), I'd like to set up one of these buttons to perform a "Win+L" to lock my computer.

I know I did this at a past job, but unfortunately I've forgotten how to specify this keypress. Can anyone provide advice?

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up vote 9 down vote accepted

Use this command:

rundll32.exe user32.dll, LockWorkStation

That should do it.

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1  
That worked, thanks! – Adam V Nov 11 '09 at 13:54

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