You can edit your schema with a tool such as XMLSpy (Home Edition is free).
Using the "Schema settings" under the "Schema design" menu, you can
customize the namespace.

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Franck M. Dauch?,
>I need the XML document that is generated when I fill out the InfoPath form
> to have certain target namespace. How can I specify in the form what
> namespace whould be used for XML generated out of it?
>
> Thanks