Yan, Proteus is right as always, I can only recommend match.com, I met my ex-girlfriend on that service, although she was from France. You can also try meetic.com (they bought match.com recently), it's a French company ... both sites are free for women, men pay a monthly fee. You'll find more North Americans on Match, more French and other Europeans on meetic ... but as with all dating sites, use caution!
Proteus you're a star!
Frank