serializing XML document header info

["Swanson, Brion" <Br...@westgroup.com>]

Is there a way for me to programmatically add comment nodes to the "header"
of an DOM tree?
 
That is, when a DOM tree is serialized, it generally writes out information
close to the following:
 
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE doc SYSTEM "doc.dtd">
<doc>
    <element/>
</doc>
 
What I want is to add a comment node before the 'doc' element so that my
serialized document looks like:
 
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE doc SYSTEM "doc.dtd">
<!-- This file has been automatically generated -->
<doc>
    <element/>
</doc>
 
How might I go about doing this?
 
Thank you.

-------------- 
Brion Swanson 
Software Engineer (Co-op) 
West Group - Public Records 
Brion.Swanson@westgroup.com 
716-327-6164 (x6164)