just as an example...

	public interface IOrderObject
	{
		string GetOrders(int nCustomerId);	
          }

The client side can code against this interface, even though the actual code for GetOrders resides on another server.

MyInterfaces.IOrderobject oRemoteOrderObject;

oRemoteOrderObject = (IOrderObject)oMyRemotingClass.GetRemoteObject();
string cMyResults = oRemoteOrderObject.GetOrders(nCustomerID);  

// oRemoteOrderObject is strongly typed...you'll be able to see the available props and methods in intellisense

Kevin