Elspode,
there's another book ( on audio) that looks at the facts/fiction of the Da Vince Code premises (example Constantines history placating gnostics, pagan, and original christian folks)..
Its sorta informative, just for the hell of it ....
http://www.amazon.com/gp/product/019...lance&n=283155
(just hit the "more" button and ya can read the pages)
Im downloading the audiobook from my newsgroup, if ya wanna copy. (its 200 plus mgs in mp3)