Ok, here's the solution to my problem which has worked for me and should probably work for you two
first, I create a file in my home directory.
Then Start menu > System > Preferences > Startup Applications
echo setxkbmap -option ctrl:swapcaps >> capsoff
The selection box pops up and click the `add' button.
Then you can click the `browse' button and select the `capsoff' file from the list of files in your home directory. When you restart, your `control' and `cap-lock' keys should be switched.
Great for emacs users, once you get used to it!
If you would like to still be able to switch back to use the caps-lock key for it, paste the following into the commandline:
echo alias capstoggle='setxkbmap -option ctrl:swapcaps' >> ~/.bashrc
This will now be a permanent alias.
Then you should be able to switch to between the two different keymaps at will by typing at the command line: