Yes of course it is a pain to do, it is FRENCH!!
You should use a locking pin set to keep the cam in place if not use tipex to mark the pulleys to belt & mark the new belt to the old one when you have it off. This will make sure you keep everything in time. Have a look in the vault for the manual you need.
http://www.matrasport.dk/Cars/Espace/vault/JE/