Hi everyone... I currently have comcast digital cable in michigan and we have the 2 wire A/B cabling system. I was wondering if there was any converter to take the 2 wire A/B signal and make it 1 wire(like a normal coaxial cable for TV)? This is because comcast has no plans to upgrade thier system to 1 wire, thus they will never offer a dual-tuner dvr due to this issue. So, maybe if I get a 1 wire system to my TV they can offer me a dual-tuner. Thanks.