When we moved from an old Windows machine to a new one, some of the installed fonts were upgraded to a new version with a slightly different name. Because of this, Word (and other programs) can't find the correct font when opening documents which were created on the old machine, even though the font is still there, but with a different name. This causes all documents created on the old machine to break.
How can I tell Windows that any program which asks for e.g. "My Old Font" should automatically use "My New Font" instead?