Welcome BigIan!!! Congratulations on your purchase! There's plenty of information here on what your looking to do, but it's probably better for you to post in the European and Diesel Powered 300C Discussion forum to ask specifics on chipping your CRD -
http://www.300cforums.com/forums/eur...0c-discussion/.
We have tons of UK and other European members here who are more than willing to answer your questions.
Bernie