I would like to increase the internal capacity of my TiVo HD. I currently have it married to an external DVR expander. I relize that divorcing the external drive removes all recorded content. Do the applications for the PC allow you to connect both drives to the PC, marry them together, and make a image? I'd like to explore the 2TB internal upgrade that I've seen mentioned but really don't want to have to TiVoToGo all this programming to my PC.