GrahamTree

Looks like you can do it online - not sure how good your French is but they have a button on the web site Ouvrir une compte. Click this and choose your french post code. This leads to another page and on the right hand side there is a button Choisir l'agence en ligne. This opens a Credit Agricole Pour Vous web site, with an option to Devenir client CA pour vous.

Good luck with the french dictionary you'll have on your lap!