i have a Phillips HDD & DVR Player/Recorder, I now have comcast triple play and the only way I can get the DVR to record anything is by putting it on channel 3 and the comcast box on the channel i want to record. before the comcast box, the dvr was able to record what ever channel i had programed it to record. is there any way around this? can you install a digital tuner in the dvr and if so would that help? I pretty much have a $300.00 dvr that I cannot use properly. thanks