Web Service DataSet question

[tc3596]

I have created a Web Service using Visual Studio 2008. It passes a dataset back to the calling service.

I need to get the data back ni a specific format..

For Example..
<?xml version="1.0"?>
<Envelope>

elements are..
<Challenge />
<Response />

</Envelop>

Currently, the resultset looks more like this...

<?xml version="1.0" encoding="utf-8" ?>
<string xmlns="

http://schemas.xmlsoap.org/soap/envelope/"><GetNewPalletInformationResponse

xmlns="

http://tempuri.org/GetNewPalletInformationResponse.xsd">

<GetPalletInfo> <Challenge>1</Challenge> <Response>2</Response> </GetPalletInfo> </GetNewPalletInformationResponse></string>

I tried creating a schema, but really don't have a clue as how to call or use it....

Any pointers would be great...thanks.