how to save xml document in database table?

I have a db in Sql Server Express 2005. Into this db I have a table with an XML field and I want to save an XML document into this field through SQL.
Any suggestion to do this operation?
Thank you

Mirko

There is a nice article about XML fields and SQL server.

http://www.developer.com/db/article.php/3565996

However there is a problem on that article I'll paste the insert statements here:

INSERT INTO Document (Description, DocumentStore)
VALUES('Bruce''s poem',
N'<?xml version="1.0" ?>
<Document Name="Poem">
<Author>Bruce</Author>
<Text>The cat/is flat.</Text>
</Document>')

INSERT INTO Document (Description, DocumentStore)
VALUES('Code of Hammurabi',
N'<?xml version="1.0" ?>
<Document Name="Code">
<Author>Hammurabi</Author>
<Text>An eye for an eye, a tooth for a tooth.</Text>
</Document>')

INSERT INTO Document (Description, DocumentStore)
VALUES('Nursery Rhyme',
N'<?xml version="1.0" ?>
<Document Name="Jack and Jill">
<Author>Mother Hubbard</Author>
<Text>Jack and Jill/went up the hill.</Text>
</Document>')

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Thank you!

Mirko