BeejCyr 0 Newbie Poster

I have been sent an xsd file to use as a model for generating an XML file. I have used the XSD.exe utility to create a typed class. I have populated this class with the data required but now I am looking for a way to turn this data into an XML string or file. Is there some utility to do this? Is is a system call? Was going with generating a class the wrong way to go?
Advice?