Non vengo a capo di un problema che credo sia quasi ridicolo....

Devo riuscire a fare un Webservices che mi calcola 1+1 e mi restituisca una risposta SOAP con struttura di questo tipo :

codice:
  <?xml version="1.0" encoding="utf-8" ?> 
- <DataTable xmlns="http://tempuri.org/">
- <xs:schema id="NewDataSet" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
- <xs:element name="NewDataSet" msdata:IsDataSet="true" msdata:MainDataTable="Cat_Download" msdata:UseCurrentLocale="true">
- <xs:complexType>
- <xs:choice minOccurs="0" maxOccurs="unbounded">
- <xs:element name="Cat_Download">
- <xs:complexType>
- <xs:sequence>
  <xs:element name="Cat_Download" type="xs:string" minOccurs="0" /> 
  </xs:sequence>
  </xs:complexType>
  </xs:element>
  </xs:choice>
  </xs:complexType>
  </xs:element>
  </xs:schema>
- <diffgr:diffgram xmlns:msdata="urn:schemas-microsoft-com:xml-msdata" xmlns:diffgr="urn:schemas-microsoft-com:xml-diffgram-v1">
- <NewDataSet xmlns="">
- <Cat_Download diffgr:id="Cat_Download1" msdata:rowOrder="0">
  <Cat_Download>Utility</Cat_Download> 
  </Cat_Download>
- <Cat_Download diffgr:id="Cat_Download2" msdata:rowOrder="1">
  <Cat_Download>Grafica</Cat_Download> 
  </Cat_Download>
- <Cat_Download diffgr:id="Cat_Download3" msdata:rowOrder="2">
  <Cat_Download>Editor di testo</Cat_Download> 
  </Cat_Download>
- <Cat_Download diffgr:id="Cat_Download4" msdata:rowOrder="3">
  <Cat_Download>Sviluppo</Cat_Download> 
  </Cat_Download>
- <Cat_Download diffgr:id="Cat_Download5" msdata:rowOrder="4">
  <Cat_Download>Antivirus</Cat_Download> 
  </Cat_Download>
- <Cat_Download diffgr:id="Cat_Download6" msdata:rowOrder="5">
  <Cat_Download>Compressione</Cat_Download> 
  </Cat_Download>
- <Cat_Download diffgr:id="Cat_Download7" msdata:rowOrder="6">
  <Cat_Download>Altro</Cat_Download> 
  </Cat_Download>
  </NewDataSet>
  </diffgr:diffgram>
  </DataTable>
questo e' stato scritto da un Webservices di .NET il quale lo posso aggangiare alle mie applicazioni "VBNET".

se faccio un webservices in PHP si puo' arrivare a questo ???

Io non sopno ancora riuscito...

come posso procedere ???