[[email protected] ace]# cat /etc/rc.conf
#
# /etc/rc.conf - Main Configuration for Arch Linux
#
# -----------------------------------------------------------------------
# LOCALIZATION
# -----------------------------------------------------------------------
#
# LOCALE: available languages can be listed with the 'locale -a' command
# HARDWARECLOCK: set to "UTC" or "localtime", any other value will result
#   in the hardware clock being left untouched (useful for virtualization)
# TIMEZONE: timezones are found in /usr/share/zoneinfo
# KEYMAP: keymaps are found in /usr/share/kbd/keymaps
# CONSOLEFONT: found in /usr/share/kbd/consolefonts (only needed for non-US)
# CONSOLEMAP: found in /usr/share/kbd/consoletrans
# USECOLOR: use ANSI color sequences in startup messages
#
#LOCALE="en_US.UTF-8"
LOCALE="ru_RU.UTF-8"
HARDWARECLOCK="localtime"
TIMEZONE="Europe/Moscow"
KEYMAP="ru"
CONSOLEFONT="ter-v16n"
CONSOLEMAP=
USECOLOR="yes"
VERBOSE="3"

[[email protected] ace]# cat /etc/locale.gen | grep ru
#ru_RU.KOI8-R KOI8-R  
ru_RU.UTF-8 UTF-8  
#ru_RU ISO-8859-5  
#ru_UA.UTF-8 UTF-8  
#ru_UA KOI8-U  

[[email protected] ace]# locale -a
C
POSIX
en_US.utf8
ru_RU.utf8

[[email protected] ace]# locale -a
C
POSIX
en_US.utf8
ru_RU.utf8

[[email protected] ace]# locale
LANG=
LC_CTYPE="POSIX"
LC_NUMERIC="POSIX"
LC_TIME="POSIX"
LC_COLLATE="POSIX"
LC_MONETARY="POSIX"
LC_MESSAGES="POSIX"
LC_PAPER="POSIX"
LC_NAME="POSIX"
LC_ADDRESS="POSIX"
LC_TELEPHONE="POSIX"
LC_MEASUREMENT="POSIX"
LC_IDENTIFICATION="POSIX"
LC_ALL=

[[email protected] ~]$ cat ~/.xinitrc 
#!/bin/sh
#
# ~/.xinitrc
#
# Executed by startx (run your window manager from here)
if [ -d /etc/X11/xinit/xinitrc.d ]; then
  for f in /etc/X11/xinit/xinitrc.d/*; do
    [ -x "$f" ] && . "$f"
  done
  unset f
fi
# exec gnome-session
# exec startkde
exec ck-launch-session dbus-launch --exit-with-session startxfce4
# ...or the Window Manager of your choice