I recently wrote a basic web service, and I am writing a client app consume
it.  Here's the trick - I want the client to be able to request the web
service without knowing exactly where it is.  Specifically I want the client
to send a request on the local network, and have the web service respond
with it's location.  For instance, I might have the web service on
"WebServer1".  The client would send out a request on the local network, and
the web service would respond with it's location (in this instance
WebServer1).  If, later, I moved the web service to WebServer2, the client
would be able to locate it by sending another request.  The client would
then consume the web service.  Is there a way to do this?  Or does the
client always have to know in advance where the web service is located in
order to use it?

Thanks,
Michael C