How to prepare snails

One of my friends who recently visited France was fascinated to find out that the snails in the local restaurants were in fact the humble garden snail.
As I have talked my game up somewhat on the culinary front, he thinks I am all knowing on matters related to food.
I was none to sure about his request as to how to actually prepare them from garden to table.
However, as ever, the good old Internet came up trumps and this is what I found.
How to prepare snails