On 01 Jul 2018, Paul wrote in
alt.windows7.general:

There's a few more suggestions here.

https://superuser.com/questions/3334...-windows-key-o
n-an-old-keyboard

The question asked there is exactly my question, too. I'm about to try
one suggestion from there, remapping the Caps Lock key to Left Windows.
There is a small utility to help do this, rather than editing the
Registry directly. I rarely if ever use Caps Lock, so this might be
acceptable.

I was really hoping to find a built-in 2- or even 3-key combo, but I
guess it doesn't exist in Windows.