In the Comcast market I am in they are requiring an analog to digtial box as of April 1st. Comcast will only continue channels 2-13 in analog. After April you will either have to have one of their rental boxes or a "free" analog to digital converter. You can get up to 2 with no charge. So much for the "if you have cable you won't have to do a thing" when the digital change takes place.