Get XML from SQL Server 2000

I have a stored procedure, that returns a customer record from the customers table in the northwind database.
how can i return back an xml string of the row?
I mean, when the aspx page calls that procudure, I want to have somehting like:
<customers>
<customer>
<customerid>xxx</customerid>
<companyname>rrr</companyname>
</customer>
</customers>
can a stored procedure return such a string in xml form?
thanks alot

Read up on the FOR XML clause. Here's an article:http://www.sqljunkies.com/Article/296D1B56-8BDD-4236-808F-E62CC1908C4E.scuk and there's quite a bit of good info in BOL.