^^^Thanks both for your efforts to explain which I'm sure to 99.9% of the population would be excellent. However, when I said dummies guide I meant it in the most literal sense!! I don't even know how to get a back up of the maps or where the sd card is, never mind following the rest of the instructions!! Compressed zips and extract zips, who knows!
As you can I see I'm a lost cause so I won't waste anyones time further on this, please ignore my request and carry on with the thread!