no LANG=C wine winecfg on Mac OS? (texts are always translated)

Hi,

On Linux, I can toggle Wine's idea about
the current language by starting with:
LANG=C or =de_DE.UTF-8 or fr_... wine winecfg
Winecfg then displays text in the chosen locale (english for C).
This works well in Ubuntu for any locale with
the language-pack-xyz packages installed (C always works).

On my Mac, winecfg's texts are always German. Even
LANG=C /path/to/wine winecfg
does not display english texts!

How to switch languages on the Mac?
I'm using 1.1.30, compiled by myself on Mac OS X 10.5.7.

Thanks for your help,
	Jörg Höhle.