I have a Pace STB supplied by Telewest for digital cable. On the back, as well as the various video ins and outs, there's a USB port and an Ethernet port. Can either of these be used to change the channel/adjust the volume settings etc.? I can't find the actual box on Pace's website, but on the only digital cable box on there that /does/ have these ports, it says "Can provide access to the cable modem", but no further info than that.