After several trial and error sessions getting all kinds of errors
like 'The module "mscomctl.ocx was loaded but the call to DllRegisterServer failed with
error code 0x8002801c.
For more information bla, bla bla",
and looking on forums where one member says the file must be put in 'system' and
another one say it must be put in 'system32',
I finally gave up.