Thanks for the additional information.
In particular, "If you tried to highlight the existing text and change it
to another font (didn't matter which one), all existing text would turn to
ascii characters!" indicates a problem that is usually referred to as an
encoding issue. As you might be aware, as you keyboard, the text is stored
as a series of codes. These codes are mapped to glyphs in a font file
according to a rule set. In certain circumstances which are most commonly
seen if a document is created in one language version and rendered on
another, problems occur. I have no idea what triggered the problem in this
case. However, there is a macro available from the Microsoft Download site
that fixes that problem. It fixes the encoding and changes ever font
occurrence to Arial. However, after the repair, you can then successfully
select any font you want.
http://www.microsoft.com/Downloads/...b9-a6b9-4618-9514-ec0c4a244570&displaylang=en
The macro was intended for a particular situation and a particular Word
version; however, it is useful for other near-parallel situations.
The Microsoft Sans Serif font has the file name micross.ttf. If you right
mouse click on the file name, you can see the maker's name. I would be
interesting to know what that is for the file set you list.
Glad to be of assistance where and if possible.
Tom
MSMVP 1998-2007