Override menu hotkeys?

[Christopher Menzel]

Greetings LyX users,

I'm using LyX 1.6 in a Linux virtual machine under OS X which uses the  
option key as the alt key.  (I also use the OS X version, of course.)   
I would like to have as many Emacs keybindings as possible in LyX, in  
particular, Alt-f to move forward by word, Alt-d to delete by word.   
However, even though I have defined my desired keybindings in the  
emacs.bind file, with the OS X keyboard, Alt-f still brings up the  
File menu and Alt-d the Document menu.  So, question: Is it possible  
to override this behavior, either in a LyX config file or some other  
config file, so that I can get the Emacsy behavior I long for?

Thanks.

Chris Menzel