Digital Cable

I'm not sure how the cable system (Time Warner) works at my apartment. I've only paid for cable modem service but ever since I got the LCD TV with a digital tuner, I've been getting a few stations, including HD. Occasionally, I would let the TV auto-search for channels to see what it can find. On Monday, it came back with a lot more stuff, including analog channels and a whole bunch of pay channels like HBO, Cinemax, and Showtime. Weird. Anyway, it's all gone today so I'm back to my limited, but free, channel lineup. What I really want is the Food Channel and maybe G4TV.