Be prepared for a long battle.
Vicious circle time:
Publishers like new authors to contact them through agents.
Agents' first question is 'what have you had published?'
So you just have to keep sending the stuff until you find a publisher ready to listen. Send a synopsis - even a few chapters on a CD. Don't part with precious copies on paper until you really have to.
Thank you very much for all these advice. I am very touched. I know that that will not easy and that will be very long. Here is how I though of proceeding : At first make several copies one or two chapters, then recording my voice on CD and send them a letter explaining my motivation to want to publish my book.
Anyway, I keep the feet on earth, I'm realist. Thus leaving from there, I'm not made of illusion. What really counts for me, it is to write and too bad if I cannot share it. All that I write will belong only to me, and I would have this pride there !