BAPI_SALESORDER_GETLIST Netweaver webservice consumption in C#

Hello,

I am sorry if this is too primitive question for this advanced forum.

I wish to use BAPI_SALESORDER_GETLIST netweaver webservice.

I do NOT want to create a proxy, but want to add web reference in Visual Studio 2003 in C# project.

Can some one provide sample code for using this netweaver webservice in my C# code with above conditions, including .Credential and explain a little bit about every thing ?

Thanks a lot.