Help with interfacing with xml

Hello,
I have a temperature sensor which is connected to the internet with an ethernet shield. I need to be able to describe its functionality using either xml or wsdl (web services definition language). I was jsut wondering how this might be done? or if there is another way to describe its functionality besides the two methods above. I am new to arduino and any help will be greatly appreciated.

Thanks in advance!
Jack

Hello.

The ardabasto project want to make a similar thing. We want to employ xml to describe universal functionality o services interface between arduino or other based microcontroller board. But simple arduino have a little memory to implement xml descriptors. We going to use Lisp or Schema, is this if posible, to implement this features.

Best regards.

coLe.