webservice logic

[Rotsey]

Hi,

I want to pass a custom object to a webservice method like this

public void WebMethod(CustomObject obj)
{
}

The CustomObject is a base class of many derived classes
that can passed to it.

Question's are where do the declarations for the base class
and derived classes have to be so I can create a derived
class object in client code and pass it to the webmethod???

I have tried to declare the classes as internal to the webservice
class but they do not show in intellisesnse when trying to call
the service form client code

rotsey