Hi guys, having recently upgraded to Telewest TVDrive it has become a necessity to purchase a HDMI switch to allow HDMI connectivity to both devices. I purchased a switch box http://www.tvcables.co.uk/cgi-bin/tvcables/hdmi-switch.html and it doesn't appear to work with the Denon. The TVDrive works fine but when I switch over to the Denon I see nothing. The HDMI light is lit at the front. Has anyone else had similar problems with HDMI switch boxes?