Without subscription, can tivo function as non DVR box? My parents are using a STB for $10 a month by verizon. They never use the features of the guide. And I mean NEVER. They have a few channels that they watch and that's it. They don't ever "surf." They don't ever press guide, so program day and time is not important. Since tivo boxes can be had for so cheap now, below $100. I figure I can get them one without subscribing to the dvr service since they won't use it. Is that possible? Once again, they don't care about proper guide info. They just turn on the tv, same channel, same time every day like it was the 70's. LOL!