I have Time Warner Brooklyn Cable with a Scientific Atlanta 8300HDC DVR. I also have a tv converter box which I have to connect to another tv to get some cool retro channels such as ThisTV which shows old movies, old tv shows, etc. Time Warner doesn't carry the ThisTV subchannel which is 11.3, WPIX. I have to record this channel with a VCR. Any way to record using my DVR box instead?