Install french Cybermut CIC Payment system on a Magento site

Hi, I've got a magento website with a e-shop, almost ready to realease, with a custom template, updated to magento last community version. I need to implement our credit / debit card payment system, which is provided by CIC / Credit Mutuel, a.k.a Cybermut. I need it to be connected to our website, able the payment by bank cards, and make sure to run some tests with the bank and the terminal before activating it. It would be easier if you speak french to communicate directly with the bank, but english will do too.