How to add a root element to an xml file?

[eurob]

I used serialization in vb.net to serialize an object. The file looks like this:

<car>
 <make>honda</make>
</car>
<car>
  <make>ford</make>
</car>

How do I add one unique root element ?
e.g.: carcollection

Thanks,
robert

 

[cjard]

http://msdn2.microsoft.com/en-us/library/system.xml.serialization.xmlattributes.xmlroot.aspx