Short answer - no. You have what is primarily a D* Receiver that happens to have TiVo software, so there is no way to use it on anything else but D*.
Yes, guide data is received via satellite and the unit (if connected) dials in for PPVs, etc. It would just be a doorstop - no manual recording at all (sorry vancod). Without D* service, there's nothing else the box is capable of tuning in to.