Using jquery to return xml file.

Using jquery to return xml file.

Hi,
 
    I am using an webservice (.net) to do some database related operations. I would like to call a method from this webservice to return  an xml file. At the client side i want to use jquery to call this webservice by passing json object.
 
  How will I do this?
 
In success method is it possible to get the xml file as returned value from the webservice?
 
Thanks,
Aradhya