I've stumbled across a new problem and after several hours of searching have yet to find the answer.
I thought I'd give the Cinnamon desktop a try out - was using Mate - but found that it couldn't take a screen shot. I found that I needed to install Scrot which I did and made a new screenshot shell script which I placed in my home folder. I then fired up the terminal entered the command "Scrot" and a screen shot was made and stored in my home folder - not in the pictures folder as many forum posts suggest. The screen shot included a picture of the terminal window so wasn't much use. I then tried to alter the .config/openbox/lxde-rc.xml: by changing these settings...
but the " .config/openbox " files doesn't exist.
I have installed openbox and am running Mint 14.
Any thoughts as to what the problem is much appreciated.