How To Modify Xml Content In SQL 2000

Hi
I have developed a sql procedure for updating some xml content using SQL 2005 xQuery features.
For example:
Declare @xmlContent = '<books><book name="asp"/>< book name = "sql"/></books>'
--Now I want to add attribute "book_id" to the xml content.
SET @xmlContent.modify('insert attribute book_id{"1" } into (/books/book[@name="asp"])[1] ')
SET @xmlContent.modify('insert attribute book_id{"2" } into (/books/book[@name="sql"])[1] ')
SELECT @xmlContent

--OUTPUT will be
<books><book name="asp" book_id="1"/><book name="sql" book_id="2"/></books>

QUESTION

Q1. Do we have any extension or plugin such that this SQl 2005 xquery feature can be incorporated in SQL 2000?
Q2. If the answer for Q1. is no (as I expect), then do we have any TSQL feature in SQL 2000 for modifying xml content?
I found all examples in SQl 2000 related with "openxml" function which performs the select kind of operations only. Like selecting data in XML format OR converting xml data in to tabular format. But I couldn't find any xml modification TSQL in SQl 2000 which can add element/attributes or change values.
one workaround could be to consider xml content as string and use string functions to modify the content.But is there any more sensible approach available in SQL 2000?