make capslock another control key or swap caps/control

open a terminal (alt+f2 bash)

become root ( su ) you'll be prompted for your password

Code:

cd /etc/X11/

Code:

cp xorg.conf xorg.conf.old

#copy the configuration before you edit it.

Code:

vi xorg.conf

#launches the vi editor http://www.lagmonster.org/docs/vi.html

Change the line that reads

Code:

Option "XkbOptions" "grp:alt_shift_toggle"

to read

Code:

Option "XkbOptions" "grp:alt_shift_toggle, ctrl:nocaps"

if you want to make the capslock another control key.

or

Code:

ctrl:swapcaps

if you want to swap the functions of control and capslock.