>Has anyone Accessed Web Service(s) from windows app?

Sure, that's the primary point for using Web Services <g>...

You can take a look at this white paper:

http://www.west-wind.com/articles.asp

Look for these two:

* Creating Web Services with .NET and Visual Studio.NET
* Passing data over .NET Web Services

Both talk about both the server and client side aspects in Windows form applications...