Oh ok

Yeah, you would need to capture it from the tv in a good format, then encode it to mpeg2, and then author it.
It would be time consuming job, but yes you can do that.
However, most tv shows aren't that long, and the quality tv outputs (not good) it would be waste of time and money. I'd suggest you burn them as regular svcd's or vcd's. That you can do with your cdrw.