Consume web service in ABAP with .NET Object

Hi experts,

i want to call a web service. Web service is written c# and take one parameter. Parameter is a Instance Class Object. SAP Generate one service definition and this instance object sending xml format. ( In the meantime service definition take rawstring format for xml ).

Q1 : How can i set Instance Object to our web service.

Q2 : How can i generate like instance object xml format ?

Thanks for your help.

Regards / Aydın.