So then it occured to me..
Create a network of around 'x' amount of computers. Install bitcoin app and run as server.
Would this not create a 'new' blockchain, which can then be introduced into or OVER the origional one we currently use?
No. This would infact help the bitcoin network, as you've increased number of distrubuted nodes.
All nodes are equal. These new nodes would have no more or no less authority than the thousands of others.