How can I add tags between the Root and Item tags

Hi,

I need to add tags between the XML tag for Root node and XML tag for item node. Is there a way to do this?

I need something like this:

<source>
<publisher>Site Name</publisher>
<publisherurl>website URL</publisherurl>
<job>
        <title>title</title>
         [...]
</job>
<job>
        <title>title</title>
         [...]
</job>
</source>

Where <source> is the root and <job> is the item tag.

Does anyone know how I can do this?