Acknowledgement:
I would like to thank X for his guidance and support and all those people who gave some of their time to test the completed system and suggest modifications and improvements to it. I would also like to thank Y for his help with colour coordination and proof-reading the finished report.
I would like to dedicate this dissertation to my parents who have been a source of inspiration to me all my life. It is only through their support and encouragement that this work has been possible.
