Meta key in Emacs 23 on Mac OS X

[Francis Devereux]

Hello,

I currently use Emacs 22.3 on OS X 10.5.7 (compiled from source).  I  
decided to try out one of the Emacs 23 preleases, 23.0.94, and  
compiled it with "./configure --with-ns && make -j2 && make install".

Emacs 23 uses Option as the Meta key, but I prefer having Command as  
the Meta key, like in Emacs 22.  Is there a way to configure Emacs 23  
to use Command as the Meta key?

Thanks,

Francis