My laptop and pretty much every keyboard I can find has a key called win key which is located between left control and left alt.
I recently migrated to KDE mint 13. I often press win key to pop up start menu (is it called launch menu in KDE? I dont really know) to run new programs, and do etc.
However in KDE I can't find any setting or customization to do this. I checked keyboard and shortcut settings, and their is no menu entry for start menu. moreover, the settings program won't let me use start key itself as a shortcut - pressing it envokes 'Meta + ' entry, which I understood as it is only possible to use it in combinations.
Using xev my win key gives keycode 133.