XML Root node / _XMLCreateFile

Hello,
I have an autoit script that takes an excel file an creates an XML file out of it. However, I am having a problem creating a very specific Root Node.
The code I have right now:

_XMLCreateFile($sFileName, "root", True, True)

However, the root node needs to look like this:

<my-feed xmlns="[url="http://address.com/schemas/feed/offers/2010-06"]http://address.com/schemas/feed/offers/2010-06"[/url]>
	<generation-date>2001-12-31T12:00:00+04:00</generation-date>

</my-feed>

How can I use the _XMLCreateFile command to generate this root node?

Thank you very much!