[arch-general] howto change change yen character to backslash using xkb

hi everyone i have installed arch with lxde , the keyboard is setup all the keys are setup except one the backslash key, in thunderbird and openoffice a backslash char is displayed but in the lxterminal and geany(ide editor) it displayes as a yen char, i added Option "XKbOptions" "yen:backslash" to /etc/X11/xorg.conf.d/00-keyboard.conf but no change, is the line i added to 00-keyboard.conf incorrect ? i understand that the console is not affected by xorg so i'm also looking for a solution there as well. shadrock thanks