I have a question about My comcast Digitak STB(Motorola DCT-2224). I have a two room set-up, HD DVR in room one, and a regular digital box in room two. The regular digital box only has RF and composite video outputs(No S-Video or Component) and it apparently does not down-convert the HD channels.....I hear the audio but no video......is there a way to enable the video on the HD channels on this box. I know I can trade-up for HD box but would rather not pay another $7.00 a month. Thanks.