>I'm working on a file with a developer who is creating the file.
>One of everal choices he proferred for exchanging the file was "Web Service Transmission"
>What is that and how would I receive the file?

That's not really enough information.

The question you should be asking is "Who's the server, and who's the client?"

It'll determine what you have to build - either a server implementation (using a WCF or ASMX service) or a Web Service client (using either the WCF client or classic WSDL.exe based client). For either scenario I would recommend using the old ASMX style services and clients when dealing with plain SOAP services (not WS*), and WCF if you have to deal with the more complex WS* protocols (Message security, certificates etc.).

+++ Rick ---