has brought about a total change in society, as we have known it. From the fifties and early sixties culture of make-do-and-mend to the materialistic, customer orientated society of today, IT has played an ever increasing role. We can now no longer spend even an hour without some form of interaction with IT based products. The IT revolution has had a pervasive growth from its start in the large corporations of the sixties. At first huge computer systems were solely the reserve of companies such as IBM and ICI who used their hugely expensiv ....