I just received my new Directv SD DVR. I don't subscribe to HBO or Cinemax, but there is the free preview this weekend and when try to record movies that are airing on those channels this weekend, I do not have the option to record them. If I'm on the movie in the guide and push the Record button nothing happens, and if I press info, Record is not one of the options. Is this because I don't currently subscribe to these channels? I don't have this problem on my HD DVR, or the old DirecTivo receiver I used to have.