Tahoma  Sugerida por soadesivos 
Myriad  Sugerida por vobvob 

parece TAHOMA

Bonjour,

Ce n'est pas la police TAHOMA.

Avez vous d'autres idées? Other any ideas?

I'm almost certain this is Myriad Pro. It's the default font for Adobe products, and if you have a Mac I think it should be on your computer already.

Thanks