Date&Time Picker ActiveX - License? (MSCOMCT2.SRG)

We are using the Microsoft Date & Time Picker ActiveX (MSCOMCT2).
According to MSDN we can just copy the .ocx to our target client and
our application should work.
However, we had problems until we entered the registry entry held in
the file \windows\system32\MSCOMCT2.SRG (under .../Licenses).

Is this a license?
Can we just export/import it to a different machine (for free?)?

TIA
Mark
(I am not a Windows expert!)