Thanks,
it was enabled, the mistake was from the sort order, t'was on 1, and I already had the paypal payment on the 1, so I put 2 in sort order, and it's here now. Concerning the geo zone, I have to put on "all zone" when I set this check module, if I put on "shipping zone 1", for exemple, it disapear from the site again.
One more trouble (well maybe it's normal). When the customer checkout, there is no indication at what adress he should send the check. It might make the customer confused. I put a link in "information" = "about payment" where I put the adress where to send the check, but maybe it would be bettter with a page like :"thank you for buying "myproduct", please send your check at this adress: "My adress for sendin check", etc.
Or I forgot something...? again....
