return xml from asynchronous web service to calling page?

[Dave]

If I'm making several asynchronous web service calls using the services
Begin/End methods. How do you return the results of the webservice back to
the main thread or calling page?

Here's my code, I get the XML in the callback but not sure how to return it
since the BeginXXX expects a IAsynchResult?

IAsyncResult ar = <proxy>.BeginXXXX(params, new
AsyncCallback(SomeAsynchCallback), <proxy>);
.....

private static void SomeAsynchCallback(IAsyncResult ar)
{
try
{
// Finalize the asynchronous call
XmlNode node = ((proxy class) ar.AsyncState).EndXXXX(ar);
.....