Ethershield Help

Im trying to get to grips with the ethershield from arduino.
and have been playing with the example code 'http request'
but no joy.
Plugging it into my network it connects and is picked up by the router as having its own IP address and the mac address is unique but when it tries to connect it just issues 'connection failed'.

Have tried looking inside my network at a webserver but no joy.

Has anyone had much success with the ethershield?