I have managed to get hold of a copy of the 40 page PDF document (can be found in French on the AE website) explaining the AE regime in English. It was translated by a translation company in the UK.
Who is it by - if it is by Alison Morton, it's a great resource but as far as I am aware hasn't been updated since 2009 when AE began. Make sure you check all the amendments since then as there have been quite a few significant changes - such as you have to declare every month now even a '0' declaration (with big fines if you don't) and it has been limited to 24 months without a turnover.