[Localization] Switching between keyboard layouts

[Alexander Todorov]

Hello list,
I've been playing with an emulated XO to find out how to enable 
Bulgarian keyboard layout.
According to:
http://wiki.laptop.org/go/Customizing_NAND_images#Keyboard

the /etc/sysconfig/keyboard file settings work but I don't know which 
key to use to switch between layouts.

and according to:
http://wiki.laptop.org/go/Keyboard_layouts#Greek_el

setxkbmap -layout "bg,us" -option "grp:alt_shift_toggle" -variant 
"phonetic," also does the trick but it's not persistent. After a reboot 
the settings are gone.

Can someone tell me which keys do I use to switch layouts if using the 
/etc/sysconfig/keyboard file or how do I make setxkbmap persistent (edit 
xorg.conf ???)

Thanks,
Alexander.