2011/7/14 Cecil Westerhof <cldwesterhof@gmail.com>
Found them. The names are all lowercase. I have:
./context/tex/texmf/fonts/opentype/public/tex-gyre/texgyreheros-regular.otf
./context/tex/texmf/fonts/opentype/public/tex-gyre/texgyreheroscn-italic.otf
./context/tex/texmf/fonts/opentype/public/tex-gyre/texgyreheroscn-bold.otf
./context/tex/texmf/fonts/opentype/public/tex-gyre/texgyreheros-italic.otf
./context/tex/texmf/fonts/opentype/public/tex-gyre/texgyreheroscn-regular.otf
./context/tex/texmf/fonts/opentype/public/tex-gyre/texgyreheroscn-bolditalic.otf
./context/tex/texmf/fonts/opentype/public/tex-gyre/texgyreheros-bold.otf
./context/tex/texmf/fonts/opentype/public/tex-gyre/texgyreheros-bolditalic.otf
./ConTeXt/tex/texmf/fonts/opentype/public/tex-gyre/texgyreheros-regular.otf
./ConTeXt/tex/texmf/fonts/opentype/public/tex-gyre/texgyreheroscn-italic.otf
./ConTeXt/tex/texmf/fonts/opentype/public/tex-gyre/texgyreheroscn-bold.otf
./ConTeXt/tex/texmf/fonts/opentype/public/tex-gyre/texgyreheros-italic.otf
./ConTeXt/tex/texmf/fonts/opentype/public/tex-gyre/texgyreheroscn-regular.otf
./ConTeXt/tex/texmf/fonts/opentype/public/tex-gyre/texgyreheroscn-bolditalic.otf
./ConTeXt/tex/texmf/fonts/opentype/public/tex-gyre/texgyreheros-bold.otf
./ConTeXt/tex/texmf/fonts/opentype/public/tex-gyre/texgyreheros-bolditalic.otf

I can install them without problems? There is no restricting copyright on them?

I installed them. (When you know what to do, it is not hard.) Now I can change the document. The only problem is that when deleting a page, or adding a page, etc., the index and the page numbering  does not change. But that could be that I do not understand Adobe. Five minutes is hardly enough to learn to work with it.

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Cecil Westerhof