Error: 64 bit DLL ???

From this page: https://www.vim.org/download.php

I downloaded this file multiple times: gvim_9.1.0_x64_signed.zip (64bit zip package)

Each time, the extracted ZIP files include this:
C:\Program Files\vim\vim91>dir *.dll /b /s
C:\Program Files\vim\vim91\libiconv-2.dll
C:\Program Files\vim\vim91\libintl-8.dll
C:\Program Files\vim\vim91\libsodium.dll
C:\Program Files\vim\vim91\winpty64.dll
C:\Program Files\vim\vim91\GvimExt32\gvimext.dll
C:\Program Files\vim\vim91\GvimExt32\libiconv-2.dll
C:\Program Files\vim\vim91\GvimExt32\libintl-8.dll
C:\Program Files\vim\vim91\GvimExt64\gvimext.dll
C:\Program Files\vim\vim91\GvimExt64\libiconv-2.dll
C:\Program Files\vim\vim91\GvimExt64\libintl-8.dll

On Windows 11, I am trying to get the older file right click options to edit with Vim.

Instructed to manually modify Registry settings, like this:
  regsvr32 "C:\Program Files\vim\vim91\GvimExt64\gvimext.dll"

It always fails with this error:
  "The module was loaded but the entry-point DllRegisterServer was not found ..."

Neither of these two DLLs are 64-bit:
  C:\Program Files\vim\vim91\GvimExt32\gvimext.dll
  C:\Program Files\vim\vim91\GvimExt64\gvimext.dll

What am I missing?

Please, advise. Thank you.

~ Mike

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