OS question intimately related to my use of Emacs

[B. T. Raven]

Hi:

I am trying to make my keyboard on Debian squeeze amd64 work for Emacs
the same as it does on the w32 build under Windows 7. I have an Xmodmap
file in my (~) /home/me subdir but sometimes it must be run multiple
times for the modkey reassignments to be seen by Emacs (loaded after
booting from the desktop menu). I think I can put the "xmodmap Xmodmap"
line into either .xinitrc or .xsession but I would rather put it in
/etc/X11/xinit/xinitrc I also read about an xinitrc.d file in this
subdirectory but I'm not sure if that's used only in other distros.
Is this safe or could it cause problems? What is the canonical location
of  that line in Debian 6.0.4 64bit if I want that keyboard layout
global for all users? Does it matter if the "datafile" read by xmodmap
is called Xmodmap, .xmodmap, or something else?

Thanks,

Ed