typophilus50 said 
(Beware! OpenOffice will use OpenType fonts, but its PDF maker will not accept them. Use Truetypes if you want to make PDFs in OpenOffice)
I have no problem with the Opentype.
Sélectionnez les fichiers de polices (.ttf ou .otf )sans l'ouvrir puis Clic-droit > Installer
What software ? What version Avant Garde ?

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