Hello,
... sorry, that I asked the same question again in a new thread --- I haven´t remember my thread a few weeks ago (http://www.infopathdev.com/forums/p/15110/53570.aspx#53570)
But in reply to Qazi Anis answer: I know that I can change the context menu commands (Attach, Save as...) in the manifest.xsf file but there´s no way to change the caption for the button text 'Click here to attach a file'.
Is there really no way to change this caption.. :-((
Thank you very much for any help.