http://www.amazon.co.uk/exec/obidos/ASIN/1854724460/ref=sr_aps_books_1_1/202-4266314-9158218

http://www.amazon.co.uk/exec/obidos/ASIN/1854724479/ref=sr_aps_books_1_2/202-4266314-9158218

http://www.amazon.co.uk/exec/obidos/ASIN/0962477060/qid=1082134332/sr=1-1/ref=sr_1_1_1/202-4266314-9158218

Those should keep you going.

- J