Send PDF forms to a Sharepoint documents library

Hello,

With Adobe Acrobat 9.1.3, I'm trying to create a PDF form that I can send to a Sharepoint document library (WSS 3.0) when I submit it with Adobe Reader 9.1.3.

To do that
- I create a PDF form
- I use the menu "Forms/Distribute Form" to distribute the form in a Sharepoint workspace
Everything is OK but by this method I receive a XFDF file in the Sharepoint documents library. And I would like to receive a PDF file...

So I tried another method. I put a button on my form. On the button I select the action "Submit a form". When I edit the action's properties, I choose PDF as export format and put the URL to my Sharepoint document library (http://xxx.yyy.fr/test/doclib).
When I submit the form with Adobe Reader, I receive the following error : "An error occured during the submit process. Unknown failure."
When I submit the form with Adobe Acrobat, Acrobat creates a new PDF file that contains the HTML page I choose as destination URL (http://xxx.yyy.fr/test/doclib).

Does anyone know what's happen ?

Thanks a lot for your help.

Best regards,

Bruno