I have a particular love of IBM keyboards, both the clicky Model M (compact) as well as scissor-key ThinkPad keyboards. Neither of these, however, has a Windows key. This key is good for much more than popping up the Start menu, so I’d like to get it back. Also, I never use Caps Lock, and have always preferred having Control in that location. So, I remapped Left Control to the Caps Lock key, and then reassigned Left Control to work as Left Windows. Works like a charm.
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout] "Scancode Map"=hex:00,00,00,00,00,00,00,00,03,00,00,00,1d,00,3a,00,5b,e0,1d,00,\ 00,00,00,00